No drivers are needed in Windows for a DVD writer (unless it supports DVD-RAM, in which case there may be a little utility you really should install to allow you to format DVD-RAM discs). Certainly you need no drivers for a ND-2500A in any version of Windows.
What version of Nero was on the CD? If 5.5, upgrade to 126.96.36.199 from ftp://ftp4.nero.com/Nero551056.exe - all earlier versions don't support the ND-2500A properly. If it's Nero 6, pick up 188.8.131.52 from the Nero web site.
32x is all that the ND-2500A supports on CD-R media - it's not as fast as some dedicated CD-RW drives, but most drives only get to the higher speeds at the edge of the disc, so it's not as bad a loss as 32x to 48x or 52x sounds.
If you still have problems, post the log from a failed burn attempt in Nero (though do cut off the top two or three lines that contain your name and the Nero serial number).