I have IIS installed and when i want to send a file to someone i have a username and pass i will tell them and email them a link to the file in the
http://userass@website format so that it is a click able link. I hate mailing stuff, and when I had a 3mb transfer rate with no limits, it was easier to let them d/l it. you also want them to have a d/l manager like getright so that if you reboot or connections drop or whateve it can be resumed from where it left off at.........