i may be wrong here ,but once youve typed your username and password in once the next time your details should appear when you double click in the username box.
I'm on XP and it remembers my password OK. It might be something to do with your security settings not keeping the relevant cookie or, if you use an internet "washer", you need to set the cookie for this site as an exception.
hi its in the tools - options - content and the clikc auotcomplete an clikc it n make sure all the boxes are clicked, so it will remeber ur pasword and stuff, it shuold work next time you sign in