Do you really need tech support?

Ask people you trust for their opinion (if they use the software).
Read reviews.
Visit newsgroups and forums and see what users are saying (keeping in mind that many newsgroups and forums are where people come to complain).
Call the vendor’s sales line and ask questions about the product and what you want to do with it.
Visit the vendor's web site and read about the product
Do you have the recommended hardware/software configuration to use this product?
Are you buying a "1.0" release? Sometimes initial releases of software are notoriously bug-ridden. You could become an unwitting beta tester.

Did you make another hardware or software change that could affect this software or hardware? If so, try going back to where you were before you had the problem.
Read the manual
Use the program’s help system
Read README files!
Ask a friend if they’re having the same problem.
Maybe you just need to reboot?
Maybe try reinstalling?