VB.net External Scripting -reg

Dear friends,

I have given an application developed in VB.net to one of my client(User).In
the source code we have used 5 rules say for example.
Now one of the rule has been changed.For this purpose Again I have take the
whole setup and deploy at the client place.I dont want to do this process
again.All I would like to do is, I have to place these rules in an External
Script.When the rule got changed, the user should be able to modify the rule
in the external script(in central location) by himself, with out the need to
take the setup again.

What scripting technique we could use in VB.net?.

I need a sample very simple vb.net code which supports this External
Scripting.

Thanks & Regards,
Thirumalai.

Thirumalai