Change macro to case in-sensitive.

Hi,

I posted a question a while ago about searching a column with values to check whether they were found in another column.

Someone helped me out there, and the code is absolutely perfect, except for this minor detail. I need a case in-sensitive search, whereas the way it is coded now, it is case sensitive. So if I search for value 1, or Value 1 is should give the exact same result. Here is the post on the forum with his solution:
http://www.excelforum.com/showthread.php?t=635063

I uploaded the file with the macro and an example. I also included te VBA code. Pointing out where the case sensitive thing is encoded is also much appreciated.

exampleNew.xls.zip