Need SERIOUS help!!!!!!

[Cubic_SM]

I was on my pc last night, everything was working fine. But i go on it this morning, and all my desktop icons i put there are gone. Only the defult ones are there. My windows theme has changed. I had to reinstall windows media player, internet explorer and windows live messenger.

 

All my internet settings have been changed.

 

All my cookies, temporary internet files have gone.

 

And, firefox is on my desktop and i have never installed it :S

 

All my saved favourites have gone.

 

All my documents have gone, and i had some important stuff!

 

I am currently doing a scan with AVG 7.5. and Ad-Aware SE Pro

 

PLease someone tell me whats up....

[AWS]

I would run one of the online virus scanners. Sounds like you are infected with something.