W2000 Server Question - User Accounts

I am leasing a dedicated server running Windows 2000. I was wondering if anyone knows this question.

When I create a user account in Windows and they can use FTP, how many users can connect with the same user account at one time? I have a program where they need to have it automatically upload certain files to places on the server for business. The software gets the username and password by calling an asp page in the background. I hate to make a user account for everyone. So can I use the same user account even if 500 people were connecting at the same time to upload software?

Thanks ahead if you know!

I would imagine the only restriction here would be the bandwidth of allowing a large number of users at one time, as far as the windows accounts are concerned, I don't think you should have a problem here at all.

I think in IIS the FTP site has an option to set Unlimited connections otherwise it defaults to a certain number. I don't think there is a limit on the actual log-ins for the OS.