Hey everyone

Sorry I'm a noob but got a question-
I recently came back from school and my parents have a WRT300N router that they use for their laptop(non-Mac) and I hooked up my iMac in my room and tried to connect to their router and the box pops up that says WPA Personal and prompts you to enter in a password so I enter in their password and then it says their was an error joining the AirPort network. Am I doing something wrong or do I need to do something else to get my computer to recognize the router? Thanks for any help