Some clarification (data) from my system with MC:s system info tool (Note that in the Burning category the Drive F: is not a Philips its a Lite-on LDW-451S. The Philips is a slave on ide1 and lite-on a slave on ide0)
BR JohnM
Media Center 10.0.100 -- C:\Program Files\J River\Media Center\
Microsoft Windows XP Workstation 5.1 Service Pack 1 (Build 2600)
AMD Athlon 1798 MHz MMX / Memory: Total - 523 MB, Free - 293 MB
Internet Explorer: 6.0.2800.1106 / ComCtl32.dll: 5.82 (xpsp1.020828-1920) / Shlwapi.dll: 6.00.2800.1400 / Shell32.dll: 6.00.2800.1233 (xpsp2.030604-1804) / wnaspi32.dll: 4.71 (0002) , ASPI for Win32 (95/NT) DLL, Copyright © 1989-2002 Adaptec, Inc. / Aspi32.sys: 4.71 (0002)
Ripping / Drive E: Mode:Normal Type:Auto Speed:Max
Drive F: Mode:Normal Type:Auto Speed:Max
Digital playback: Yes / Use YADB: Yes / Get cover art: No / Calc replay gain: Yes / Copy volume: 32767
Eject after ripping: Yes / Play sound after ripping: No
Burning / Drive E: PHILIPS CDRW1610A Addr: 0:1:0 Speed:16 MaxSpeed:16 BurnProof:Yes
Drive F: PHILIPS CDRW1610A Addr: 0:1:0 Speed:16 MaxSpeed:16 BurnProof:Yes
Test mode: No / Eject after writing: Yes / Direct decoding: Yes / Write CD-Text: Yes
Use playback settings: No / Normalization: None