The M-Audio Transit uses custom drivers which are different than the standard WDM or ASIO drivers. The latest Transit USB driver is Version: 5.10.00.5125v3 with a release date of March 13, 2009 and can be downloaded from the M-Audio site:
http://www.m-audio.com/The custom drivers enable the Transit to output:
2 in, 2 out, 16-bit, 8000 Hz to 48000 Hz
2 in, 2 out, 24-bit, 8000 Hz to 48000 Hz
2 in, 0 out, 24-bit, 88200 Hz to 96000 Hz
0 in, 2 out, 24-bit, 88200 Hz to 96000 Hz
DD/DTS Pass-Thru (16-bit, 48000 Hz)
I never tried the Transit with WDM or ASIO drivers and seriously doubt it would work, though I have been surprised before.
I have found that Vista using WASAPI does sound better than XP. I would go to the Dell site and see if there is an updated BIOS and drivers for your netbook that will solve your stability problems, your ears will thank you. Windows 7 might even be better choice if your netbook is new enough.
Wayne