>>>I use LogMeIn which lets me long into a client's computer and do stuff from the internet. It didn't happen yet but I guess that eventually some users could be reluctant to this approach.
>>>
>>>Is there a tool (XP and VISTA needed) that would let users know who did what on their computer.
>>>
>>>I need a tool that would let the user check what I did on his computer. Having such a tool would make it easier to convince reluctant usera.
>>>
>>>For example with that tool the user would be able to see that I only went on his computer and only used/updated things related to our apps and nothing else.
>>>
>>>It would be additionnal security for them.
>>
>>Doesn't LogMeIn ask the user for permission - or at least offer this option?
>
>Yes sure but as soon as I'm on the client's computer there are no restrictions. This tool that I'm looking for would prove to the client that I didn't go to places where I was not supposed to go.

Try a keystroke logger.