BTB is correct, there is no spinner. Just played a game through steam, works fine.
Only settings are Steam settings, which I have sitting at default. I have a 22 inch wide screen monitor and normal resolution is 1600x900 and I run the game in fullscreen, per WGT settings and 16x9 and at 1360x768 WGT settings.
Yes some screens, such as friends do not have a slide bar on the right, press and hold the left mouse button in a blank area to the right of the friends pictures. Between using the scroll that way and the scroll button on the mouse you can see them all. Worked this same way with the launcher PCEA. If you need to be running in windowed mode, set that through either Steam or WGT. But the only reason I can think why you would want it that way is to run other programs, which will probably get you banned anyway. If you look at the default settings, steam guard is on by default, DO NOT DISABLE IT, it is there for your protection. Disable it and expect to see days ban, unlike a VAC ban which is permanent.
Something else you will find. When clicking the x to close Steam, it doesn't actually close, it just closes the Steam window, you must go down to the taskbar and right click the steam icon and select exit for it to totally shut down. My icon is hidden under the arrow over on the right by the date. Otherwise Steam will still be running in the back ground.
Oh, btw, it works just fine on this emachine dual core running 64bit windows 7 sp1. But I do have a GTX570 GPU in it. WEI is at 5.9