I wanted to free some space on my computer, but i dont have a DVD burner, and my dad does on a seperate computer...is there a way i could burn my .avi files to a CD-R just to carry them to his computer and burn them to a DVD? 
Yeah, just burn them using Nero, burn them as a Data disk then take your CD-R and put it in your other computer and copy them to the hard drive.
"Tennis Shoe Network”
Do you have access to a JumpDrive? Or even a digital camera that works like a hard drive?
That would be faster, eh?
Why not network the computers, them use your dad’s omputer to access the computer with the movies, copy & paste them to your dad’s computer through the network (ethernet cable & switch will do the job)
.. or use your wireless connection to send from one computer to the other (put movies in shared folder)