SOLVED
This problem has something to do with a microsoft update called KB888111.. allthough you can't download it on their website (woohoo.. what a suprise) you can find it on your recovery partition.
If you are stupid like me and didn't make a copy of it before doing a clean install there is allways kind souls on the internet.
http://www.box.net/public/ireki91lls
Install that and then install the audio drivers from lenovo.
EDIT: Well.. Now I am able to install the drivers, and everything looks fine in windows.. xp finds my sound card like it should and from what it sais now everything should be ay okay...
But... I am still completely unable to hear ANY sound come form my speakers? nothing.. nada.. niente.. No matter what I've tried..
Ive tried updating everything,, even the chipset.. nothing!..
EDIT:
SOLUTION
Uninstall EVERYTING that has anything to do with your sound card. Also uninstall the KB888111 hotfix if you have allready installed it.
restart.
Install KB888111 hotfix, then install the 77a224ww driver.
restart, and everything should be working ay okay. It did for me.
SOLUTION