How do I set all websites I am hosting to port 21 ?

I've searched far and wide for this answer

[impromp2]

I'm running Windows 2000 Advanced Server and I am hosting around 40 websites on IIS. When I create a new ftp account for a new website, I have to set different port numbers for each one. But Ive seen other Windows 2000 Servers that have all their sites as default port 21. How do I do this? Is there a special software that I need, or something that very simple that I can do in some settings on my server? I'd appreciate anyone's help and advice. Thanks!
Jimmy

[DaveAtIFG]

Welcome to WebmasterWorld impromp2! I'm far from an expert in this area, bear with me, I'll offer two suggestions. This page [iisanswers.com] describes one way of setting up the MS FTP and, although it doesn't mention port numbers, it may help you do what you want to do, not sure.

Also, if no one adds anything you can use, there's a fairly active IIS forum here [winnetmag.com] and you may want to try your question with them. Just don't forget to come back!! :)