Have you just tried using Winzip to compress the file?
If that doesn't work for you, there is no good way to do what you are asking. Pre-existing backup files don't "split". You can, however, make a new backup file to multiple devices on the hard drive, then write those mutliple devices to as many CD roms as necessary, then save them down to the hard drive of the new PC and restore from them. You'll need every last device in the same folder though, for the restore to work properly.
The trick is, when doing a manual backup, when it asks you the location to save your backup to, you remove your old location/device, then hit Add. Pick your folder and name the backup "Device1" or something user friendly. Hit Add again, pick the same folder and name "Device2" and so on until you think you have as many devices as you need. This stripes your backup (like RAID striping) between these devices, so you will need all of them since the restore will pull data from all these devices simultaneously.
Make sense?
Catadmin - MCDBA, MCSA
"If a person is Microsoft Certified, does that mean that Microsoft pays the bills for the funny white jackets that tie in the back???
