Uninstall Hal 6.0 Problem

[JS]

How do I uninstall the Hal 6.0? I purchased a new copy of the Hal 6.0. I had another version I purchased on a flash drive which is now on another computer out of town. It keeps saying I already have a copy installed on my computer now and I don't. It also says you can remove the register key but how do I do this?
   Thanks.

JS