Thanks for all the input. I am pretty amazed how my email name offended so 
many people. Still, in the original question I did put my name at the end, 
and my hotmail address reveals most of it too.

So let me introduce myself: It's Arjen Roelof Vellekoop I live in the 
Netherlands, and am currently involved in a small project with a PIC16F628A

I got some really good suggestions:

1 Apparantly, modem messages are unique in their first character, that makes 
life really simple.
2 The suggestion of adding individual chars(values) to get a 'stamp' may be 
quite useful too.

I am pretty familiar with assembler and ways to compare individual 
characters (Xoring, Anding and checking for Z-flag) The question may not 
have been put clearly:

Is it possible to assign two pointers (in my case to strings to compare) in 
the 16F628. One pointer is possible via the FSR.

Arjen Vellekoop

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