Greetings fellow loungers

I have a Windows Mobile 6.5 phone which I used to be able to sync to our exchange server at work. Recently the server was upgraded and now a certificate is required to connect. The ICT manager has provided me with the certificate, but doesn't know what is required to use it. I've tried looking at the documentation, but it may as well be written in Greek for all the sense I can make of it. I should emphasise that the ICT manager has no objection to me connecting to his exchange server, and has even promised to look in to it when time allows, but that may be some time in the future.

Can anybody out there point me in the right direction, please? I know I can use Activesync to connect to Outlook, which is what I'm currently doing, but that will only work for one location, and I regularly work from two so I'd quite like to get back to syncing directly with Exchange.