Did you use ActiveSync's backup option to create this backup file? if so there's a free piece of software you can use to extract information from this file:
STG Viewer:
PocketPCFreeware : STGViewer 0.2 Beta
Unfortunately, even if you are able to get a 6365 from someone else, I'm not sure that you would be able to restore the backup file to it. The older backup software (both IPAQ Backup and the AS backup option) are designed to only allow restoring to the original pocket pc.
julie