Free web page hosting.
The cheapest way to get pages up onto the Internet is to become a member of a web community like Tripod or GeoCities. Both of these sites, and there are others, will host pages for you for free if you provide certain information about yourself.

Hosting Pages in the home directory of a user account.
This is an inexpensive, no-frills option. You will use a commercial account not unlike the one you have on Fargo, and store your pages in a public_html folder. The service provider will give you a quota of disk space, and you'll have to pay extra if you need more space. Most sevice providers prefer that only individuals use this type of web hosting account.

You'll want to inquire about cost, helpfulness of tech support, and the amount of space available for web pages at no extra charge.

Commercial account, no frills.
This will be slightly more expensive as most providers charge a premium to commercial customers. In terms of what you get, though, this will be the same as a normal user account.

Commercial account with domain name.
This is the most common way for a business to establish a web presence. The main difference from a normal commercial account is that the service provider has set up an "alias" for a domain name so that it appears that the company has it's own unique address, i.e., www.mycompany.com. In reality, ISPs will have up to 255 companies hosted on the same machine. There will be a charge to set up the account, and a separate charge to reserve the domain name.

This type of account has become very competetive in the past year or two. Many companies offer this service and prices have really come down. Expect to pay around $25/month for a good amount of server space, a domain name, and a few gigs of transfer.

You'll want to know the operating system of the servers, and the type of connection that the ISP has to their service provider. The ISP will have some sort of policy about CGI scripts, so you may want to inquire about that ahead of time. Prices for this service can vary widely so shop around.

Premium hosting.
Similar to a commercial account with a domain name, but with added technologies such as a secure transaction server, or multimedia technologies such as RealMedia. Many of the national ISPs will charge you a premium price for essentially standard web hosting. What you are getting for that money are things like a higher bandwidth connection to the Internet, and hopefully more reliable network stability and tech support.

ISDN
ISDN isn't such a great option for running a server, though it is often a good but expensive solution for browsing the web. The reason why it's not great for servers is that bandwidth is limited to 64 or 128 KB/s depending on whether you get one or two "B channels," and the connection is not usually dedicated. The cost of ISDN is metered, meaning that you pay between 2-5 cents per minute for the length of the call. This makes ISDN a very costly solution for the bandwidth you get if you plan to keep the connection active for a long period of time. At this point in time the only reason why someone would choose ISDN is because it is available throughout NYC, including neighborhoods where xDSL and cable modems are not available yet.

Server co-location.
This is where you set up your own server, and then move it into the network operation center of your ISP. This gives you the flexibility and labor of running your own server, and buys dedicated bandwidth without the additional cost of haveing a leased line installed to your office.

Leased line.
The most powerful and most expensive solution is to have a dedicated high-speed line installed to your office. To do this you will need to operate your own server(s), and pay fees to both the telephone company, and to an ISP (Although sometimes the ISP will charge you one fee and they will take care of the provisioning and paying for the line.) Line speeds will range from 56 KB/S, to fractional T1 as a leased line of frame relay, to T1, to 10 MB/S, to T3. Costs are steep but tend to go down depending on the length of contract that you commit to.

Leased lines are distance-sensitive in terms of cost. The distance from the site to be wired to the nearest phone company central office determines the recurring cost of the line. For far-flung locations, frame relay is generally a better option because it's cost is less distance-sensitive.

Generally speaking, only companies which already operate their own servers, and therefor have staff people dedicated to the care and feeding of those machines, will even consider leasing a line for their web solution.