Resolution Resolved?

Hey all, I'm almost completly new here, I've just looked around and downloaded a number of themes. But I have one, not so small, problem. My resolution is 1680x1050, which means almost all logon and boot screens don't fit at all :-/ . I've tried remaking a few logon screens I like, to fit, but I'm very inexperienced and really have no idea how to do it. I kind of got one of them to look alright, but not the way I wanted it at all. Could someone with more experience than I help me out, please? Either a way to resize them myself that doesn't take all that long, or a really helpful volunteer that would remake one or two just for me? By the way I can't use StyleXP, I'm using XP SP3, but of course I have a patched uxtheme.dll to help out.

Does anyone know anything about this? I can't spend any more time on this at the moment, I should be studying, and I'm basically ready to just let my login and boot screen look out of place nex to my pimped out desktop, windows, icons and all.