OK Im trying to set up arena on a Windows 7 computer

Ive installed the Game in the folder the sticky described (inside Games in the dos box folder)

When I try and set up sound I get a message that says "Disk is Full. You Need 0 (0 MBytes) Free"

Please help as I want to experiance the first elder scrolls but this problem has me stumped

I will put up pictures of what im doing if asked.