VS 2012 How to check if the first word in textbox is "CLEAR"??

As previously written in this thread http://www.vbforums.com/showthread.p...19#post4569619 I am now trying to check if the first word in a textbox is "CLEAR" but even though I got some clues from OPUS I still haven't solved it.

Can You please help me??

To specify a bit more it has to check if the FIRST word in the PARAAtextbox is the word "CLEAR". This check is only if the selected value in KlassCombobox is different from "UNCL"

Hope it makes sence. :)

Thanks in advance.