I use AIDA32 to audit my systems at login.... It's off the market, (it was freeware), but you can d/l it from here.

Create a public folder on the server with read only rights for domain users and unzip the files into there. Then create a write only folder in the same place so the users can dump their files there. Then add the following to the login script.

' Carry out inventory check using Aida32
'***************************************
Set objShell = WScript.CreateObject("WScript.Shell")
Set objExecObject1 = objShell.Exec("cmd /c X:\aida32\AIDA32 /R x:\aida32reports\$HOSTNAME /CSV /AUDIT /SILENT /SAFE")

Then every time someone logs into a computer, including servers, the machine is audited to an incredible level of detail in a matter of seconds and the report is dumpped into the aida32reports folder. If you then open aida32 on your machine and drag and drop all the reports onto it it will run a complete inventory for you..... Sweet