Urgent Help Needed

[sbe83s]

I'm in need of some urgent help...

I have a navman pin 570 which was running windows mobile 3... i have a lot of
contacts that i kept backed up on the sd card... the device is no longer
working and the backup file which is an .abk extension cannot be opened through
windows xp... My question is how do i get the backup and restore
function onto windows mobile 5/6 that was pre loaded onto windows mobile 3...

or how can i extract my contacts from an .abk extension

any help would be greatly appreciated...

Regards