I took a Windows XP PC that had no burning software on it and achieved complete success with CDRWin, Nero and CloneCD. These are the principal steps I used, note particularly step 2c) for CDRWin 3.8D:

STEPS
=====
1/
Plugged a Yamaha 2100S into the SCSI port. Recognised and installed by XP.

2/
a) Installed licensed version of CDRWin 3.8D. On loading, gave error message that ASPI layer not found

b) Installed Goldenhawk.com version of ASPI kit. It put wnaspint.dll in SYSTEM32 directory. CDRWin still did not work.

c) Renamed winaspint.dll to wnaspi32.dll. THIS TIME CDRWin 3.8D WORKED OK.

d) Upgraded to CDRWin 3.8F. This installed updated wnaspint.dll driver. So I renamed wnaspi32.dll to something else to see if 3.8F needed this name. CDRWin 3.8F worked with wnaspint.dll.

3/
Installed licensed Nero 5.0 and updated to Nero 5.5.5.1. Worked perfectly - no further manipulation required.

4/
Installed licensed CloneCD 3.0.8.1 and updated to 3.1.0.0. Worked perfectly - no further manipulation required.

CONCLUSIONS
============

a) A fresh install of software is a guaranteed way with XP.

b) The ASPI layers for CDRWin and Nero are inter-operable

c) Point 2c above removes a problem with 3.8D and thus possibly with XP upgrades

Hope this helps