i did, hate the default one. login studio is great, after you set it up you never know its there. what i found is that many logins do not "fit" well with the high screen res and the the widescreen. there are two things you can do, a) d-load a bunch of logins and see which ones work with the wide screen, many do not; or b) d-load a login you like, then get a good image editing program (jasc paint shop pro, etc, a demo will be fine). after you got that, open the login to edit, and somehow (dont remember exactly) copy the background image to the image editing program. then all you have to do is mess with it and re-size it so it looks nice at your screen res (tried it once but didn't actually use it). you can also try and make your own login, but that takes more work.
in the end i just ended up finding a login that looks ok and works good with the screen res / widescreen i have.
the author for my login is Apocalypse, he tends to make good stuff, here is a link to the login i have (its the first one on the list). the link also has the author's other work which i am going to look at now (might be time for a change). hope this helps.
http://www.wincustomize.com/Skins.as...txt=Apocalypse
*update: i now have the half-life 2 login, ... looks great...