Help..iATKOS S3 V2 Boots Only With DVD Post-Installation Even After Choosing Bootload

I've Been Trying To Install iATKOS S3 V2 On My Friend's PC..

The Config Is :

Intel Core 2 Quad Q8400 2.7GHz, Intel DG41 Chipset(ALC 662 HDA, Realtek 8168D/8111D LAN), 2GB RAM, Nvidia 8400GS 512MB

I Got The Perfect Install Very Easily And Booted Into Mac OS X On The Very First Try..

Everything Works Perfect Except The USB(Tried All The Fixes On The Disc) Pls Give A Solution For This..

AND

I Am Not Able To Boot Into OS X Without The Install DVD Inspite of Choosing Bootloaders During Installation.. I Get BOOT ERROR Message Without Install DVD.. I Tried Asere, Chameleon During Installation..

Note : I Already Had An Windows XP Installation On Another Partition.. I Tried To Use EasyBCD On XP.. But It Didn't Detect Boot.. So I Tried Boot Think 2.4.6 From XP ... I Get The Boot Options Now.. Windows Boots Fine.. But When I Choose Mac.. It Boots And Then After Going To Desktop, I Get A Panic...

Please Help And Give Me A Solution For The Above Mentioned Problems...