Default Font and Size for excel, word,outlook on 03 and 07

[surfernat]

Hi

I was wondering if someone is able to inform me how best to change the default font type and size for Office on all my client pcs without having to physically going to each machine.

I have a mixture of Office 2007 and 2003 users. I need to change the default font for Word, Excel and Outlook to Trebuchet MS size 10. Is there some script I can throw in my login script to get this changed easily.

Thanks in advance
nat