Help a newbie with mac and vm fusion

ive looked all over forums from here and other sites and i cant seem to find an answer to my question.
1. using vm fusion and bootcamp xp: will making changes (ie saving to windows or in control panel -if at all possible) will it reflect in bootcamp if i switch over.

2. if i use fusion, is it even necessary to go into the bootcamp partition anymore.


im an architecture student that just switched to mac. i need to run autocad, 3d studio max, rhino and sketch up in windows. if you all have any other suggestions please let me know. thanks for all your help, i know many users are really good at this stuff.

-mario

edit: im running a mbp 2.2 if it matters