Capture user data

[harmstrong]

We have a number of users using a workbook and we want to record who has completed each step and when.
The way the workbook will work is that when a user completes a task they hit a button which stores their user name and date stamp in a separate work sheet.
Does any one have any ideas how we can get user user name?

[mdmackillop]

[VBA]MsgBox Environ("Username")
[/VBA]