accessing mac hard disc docs from windows

I bought a 13" MacBook Pro 7 months old so it has snow leopard installed.
I however need to use Autocad for work so I was running parallels but a virtual machine runs AutoCad veeeeery slowly.
So after a helpful colleague buggered about with my mac and Parallels fell over every time I typed a letter into AutoCad I have used Boot Camp to partition my disk and run AutoCad quite nicely in Windows XP.
I have two questions however.
I do not want to put all my drawings on the XP partition as it would fill it up so can I access "My Documents" on my Mac from the XP partition? If so could someone please explain in words of half a syllabull?

In order to store documents created within XP on to your OS X Snow Leopard partition, you will need a special driver. MacDrive is $49.95 but works well.

You might want to consider using an external hard drive instead to store your large Autocad documents.

Regards.