Need help with windows 7

Hi im new to using windows 7. I'm having some problems so far with it aswell.
I can't play games like Combat arms from Nexon, A.V.A from ijji and etc.
For some weird reason when I click on my windows live messenger the window doesn't show up but it shows the icon in the toolbar and I also tried clicking it, it still doesn't show up on my screen same as my sticky notes. Please give me some advice and tips on how to fix this, how to prevent and etc. Thanks in advance!
* NVM I figured out why my msn window wasn't appearing on screen it was far right on my screen so i couldn't see it but i used magnifier and was able to find it :). I still need some advice on how to prevent this.

Some games won't play in Win7. I have gone through the troubleshooting process with MS MVP's at Technet and it is:

Install the games in compatibility mode working backwards with each attempt (after uninstall).

Run the game .exe in matching compatibility mode, as above.

Try the current video driver in compatibility mode, as above.

Download the latest beta video drivers, install in compatibility mode, as above. Roll back if needed.

Find and install the previous Vista video driver, then try in compatibility mode, as above.

Try each game install .exe and run .exe compatibility mode in each beta/Vista driver compatibility mode.

Give up yet? Install Vista/XP on second partition/drive for games you can't do without..

OMG aww dam...
Will the games that don't play on windows 7 now, be fixed to work on windows 7 soon?

Google: [Game Name] Windows 7.

Post in that game's popular forums, and here in the Gaming forum.

Contact the game maker, or check their website for Windows 7 updates and news.

If they have a Vista driver, they should be able to be made to run right.

Thank you.