Cant change Homepage?!?!

I clicked on some chinese popup on some website and then after i restarted my IE my homepage changed to some chinese website and i cant change it i tried alot of Spyware stuff but they all didnt work, any help guys

BTW everytime i click on something my AVG detects an open on my cookie thing
some info of my PC
it is Vista home premium
i have Internet Explorer 7

Help?

Internet options.
Or Google Chrome.

1) Download Malwarbyte's Here

2)Scan your computer with your AVG

3)Scan with Malwarebyte's

3)Remove the virus

4)Have fun :P