Is Intuit back to their bad old ways?

When I installed TurboTax on WinXP, the StartupMonitor freeware said the
TurboTAx program registered "advpack.dll" to run at system startup.

What does advpack.dll do?
Is it an advertising adware or spyware package?

When you install TurboTax 2006, would you say YES or NO to the
StartupMonitor freeware warning:
"The program wextract_cleanup0 has registered the executable
rundll32.exe C:\WINDOWS\system32\advpack.dll,DelNodeRunDLL32
"C:\DOCUME~1\user\LOCALS~1\Temp\IXP000.TMP\"
to run at system startup.
Do you wish to allow this change YES NO

Is this advpack an advertising package?

Carol