I have been trying for a week now to get my audio card working on my Dell Inspiron 1721. I did the update to 7 and then lost audio, I found a driver that would install, but then the audio was pure digital garbage.
I have yet to find a driver that will work. I went to SigmaTel homepage but that didn't help either.
I upgraded to 7 64bit from a 32 bit version of Vista. Full program, not the upgrade. I am ready to dump 7 and go back to Vista.