or complete backup, delete the files, keep the backup for a while to recover if problems...
or just get bigger disks so you needn't worry...
I like many things about XP... the lack of _easily obtainable_ detailed doco in areas like this is one of my current issues...
JTB
Solutions Architect
MCSE-NT4, MCP+I, MCP-W2K, CCNA, CCDA,
CTE, MCIWD, i-Net+, Network+
(MCSA, MCSE-W2K, MCIWA, SCSA, SCNA in progress)