[AccessD] SQL Express upgrade to Developer

Folks,

When I put Visual Studio 2005 on my new compter it installed SQL Express
which I understand is the SQL 2005 version of MSDE.  I recently wanted to do
some experimenting with the new version but find none of the traditional
management tools or books on line are in the package.  

Here is the question.  What problems will I create if I uninstall the
Express version and install the Developer version that comes with MSDN?  I
am getting a little gun shy on updating MS programs since I have  had some
problems recently with security updates and service packs.

Thanks in advance.

Doug