Smart question (or not)

Hi, I have just installed Smart. It detected numerous channels (not sure how), and I accepted all. Then I did something that crashed my pc, and I had to reboot. Smart ask me for the channels again, but thinking (well not thinking actually) that I already did this, I said no to all. Now I have to add channels manually, but I was just wondering if there was a way where I could get Smart to auto detect the channels again. There seemed to be some ones which I didn't know about which looked interesting. Thanks Marius