Thanks for the info, I have ended up using the demo verison of Alchemy Network Inventory
Runs a exe during login and creates XML files which the main program reads, however it will only read the first 3 as it is a demo version so I just keep deleting the first 3 rerun the report etc etc and then compile my data from it.
Tried using kixscript to do it but could not merge all the txt files and Access would not import the data well.
It is not a perfect solution as I will no doubt miss some of the pc's etc
Jon