I also have a yahoo small business account. The issue is that they no longer support ftp (not ftps), which I need for FP 2003.
I'm guessing ya'll mean sftp...secure ftp....
Just a suggestion, and I know it is 'easy' for me since I'm an IT guy..but get away from Front Page, no one really uses it anymore, and real sites haven't for a LONG time.
I know it may be painful for you at first, but in the long run, moving from that will likely be a boon to you. Not sure what I'd recommend, since I like to handcode things a bit and I can set up and run my own servers at my house (I have a business internet acct. with Cox Cable, only $69/mo...and worth every penny to me)....
But do look for alternatives. There are lots of services out there that do host for people, and some do allow and provide tools for you to manage your own site.
If nothing else, think of it at a good time to maybe redesign and breathe new life into an old site?