Shared Sunbird profile

Hi

I run native Sunbird on a mixture of Macs and Linux boxes at work, and I'd really like to use the portable Sunbird on Windows too. I share my profile on the Mac and Linux versions using symbolic links pointing to my data on a flash drive. I don't know enough about Windows to get the portable Sunbird to also refer to this single folder. Could anyone let me know if this is possible, and if so, how?

Many thanks.