Ok, so I went into my router's settings to find the WEP, and I saw there were 4 fields for different WEPs to choose from, so I (very retardedly) entered another one in the next one down and chose that. After finding it didn't work, my laptop couldn't connect wirelessly, so I went back in via a wired connection and put it back, but now my laptop can't connect to the router at all. I get the same old message I might not be within range, blah blah blah. And basically I've !@#$% up. The thing is, my sister's computer works fine (the reason being I can get here), yet mine just absolutely will not connect. Halp? And yes, I do take this as a hint not to !@#$% with settings again, no matter how desperate I am for Xbox Live.
