[AccessD] 2007<-->2003

Dear List;

I now have Access 2007.  When I run it after having run 2003, it takes about
2 full minutes to "configure" itself.  Going back to 2003 is a bit faster
while Office 2003 reconfigures itself.  I don't have this problem on the box
which runs 2000<-->2003. 
 
I don't want to buy another box just for 2007.  (I don't even want to use
2007 but I'm being forced into it.)
 
Is there any way to stop this time water 'reconfiguring'?
 
MTIA
 
Rocky