Webcam Help

Hello,
I recently purchased a webcam (HP) for my computer which came with it's own software (Magic-i 3). The cam works great with it's own software, however, it is suppose to be compatible in other programs also, Yahoo Messenger for instance. When I try and use it in Yahoo Messenger, it doesn't work correctly. I don't know how to change it or make it work correctly and when I go to the program support page, I can get email support, however, it wants the program version # and it is not listed and if I want telephone support, it is a long distance phone call and an additional $10.00. I don't know what to do but I'm about ready to throw the computer out the window because I'm so sick of being frustrated and angry because it doesn't work. HELP ME!!!!