I have a Sony dru500a DVD burner. My PC is a 1.6 AMD with 512MB ram. I am using PRINCO DVD-R. I am using the Matrix MOD set to mode 4 with the xtender v1.1 cracked BIOS. I have used DVD decrypter v220.127.116.11, Nero v5.5.10.? & Record Now Max v4.5. PrimoDVD v2.0 & Discjuggler v4 can't find my DVD burner. So far I have burned Halo, Monopoly Party, Frogger Beyond, Outlaw Golf, Bloodwake(on CD-RW) and 2 MAME-X CD's. Only Bloodwake, Halo and the MAME CD’s have booted in my Xbox. The rest just go to the regular Microsoft dashboard. I have also tested these CD's in another Xbox with the same chip and BIOS but newer kernel. Any one have and suggestions? Thanks.