it is very simple to write a code section to write basic info to DB, you can collect basic stuff like:
Serno, userid, wksta, ipaddr, macaddr, make, model, date, etc.
that would provide a very basic and functional inventory.. and would run in about 3 seconds when added you your logon script... less if your script allready collected that data, the writing to the sql db is very quick...
Then you make a tool that queries the DB to some sort of lookup
"select * from InvTable where Userid='xxxxxx' and date='@date'"
Since you could have the MACaddr, you could do WOL...
Since you have serno and model, it becomes an inventory...
etc
