ASUSTeK Computer Inc.-Forum- Xonar D1 problems

I have 2 problems with my D1 Sound Card. I installed Win7 on my PC and I can't make my Soundcard working. Win says that there are no resources for my card, and i should disable some other hardware. I don't understand why is this, because under my old WinXp it worked fine. The second problem, is more like a question. Under Xp, I've got a huge cpu useage bump after installing my card. (before the main system used about maximum 5% in idle, but after i put my D1 in, and installed it's driver and stuff, the idle cpu usage is much more 50 or 70% of the whole processor performance. I think its not normal, and have no idea, why it uses so much CPU. So the question, is this normal, or not? If not, can you give me some ideas how to solve this? Under Win7 i tried a bunch of drivers, and the patch, but nothing happaned, I think, there's an other problem, but don't know what. (Of course, first I tried everything, with disabled on-board audio, but now, its enabled back, to try it out under Win7, it "works" but my D1 don't) [There are problems with the on-board audio too]. The Front panel Mic pins are connected to my D1, the headphones are not. (With the onboartd chip my frontpanel caused some problems) If it matters, my config [bit old]: CPU:Ath64 3800+@2,4Ghz ; MoBo: Abit KN9S ; Mem: Kingmax 4x512Mb@667Mhz, VGA: Inno3d Ge8600GT 512Mb GDDR3, Audio: ASUS Xonar D1 Thx for help