Tracking User

[Matt5]

Hi All,

What i want is to track a user when they register on another site through mine. The links set up fine with a field called track="...".

What I want is to insert the username or the userid in that field to whoever is logged in.

So the line would look like.. site.com/signup.php?do=sign&of=2&track=MATT5

How do I go about this, is it as simple as just gathering the userid/name from the vb values?

(I'm not very good with this stuff!)