Basically I was trying to hook up internet from my router to my sister's computer. The internet wouldn't load so I toyed around intelligently with everything, I know what settings not to touch, etc. So I went into dos prompt... I sent the command to release, that was successful. Then I send the command to renew, and there was an error. It said system cannot find the file specified. So what do you think could be wrong? How can I fix this?