In response to the reply you received from Steve Crawley

The WritePrivateProfileString is the means by which VB can create INI files. It is not a means of interrogating the registry nor is it a means of aquiring information regarding a Machines IP address

I have a collegue who is an API guru he should have code or at least information if what you want to do can be done in VB I will get back to you via this site tomorrow (or no later than the next day).