Won't accept password when publishing

I have loaded FP2003 and kept FP2002 on same system. Everything working
fine, but I can no longer publish to my site, it won't accept my password.
I verified with hosting service and have discovered if I publish from
another computer, I can get on the site! SO - somewhere in my computer
there must be an old password that is being used instead of what I'm
typing?///

Also, If if ftp from my system - works fine.

any ideas?

dan