Dual boot - common PST file.

[Lenster]

I dual boot XP and Vista using outlook 2007. I have moved my PST file
location to a common partition that both OSes cann access. I can see
all my emails and contacts correctly but I have one problem.
I have 4 email accounts set up and I have established rules which move
incomimg mail to the appropriate inbox base on the recipient in the
email header. The rules work fine but every time I reboot into the
other OS, the rules stop working and I have to edit them to reset the
recipient and then set it again and re-apply the rule.

Not devestating but annoying. Any way to stop this from happening?

Thanks

Lenster