SQLEXPR32.EXE Vs SQLEXPR_ADV.exe

For a program written in VB .net 05...

We are upgrading our customers from MSDE to SQL Express 2005 (SQLEXPR32.EXE - not the advanced services version). However, I accidently via PCAnywhere installed the advanced version (SQLEXPR_ADV.exe); and, to make things more interesting, we want to change the name of the Server Instance from the default of SQLExpress.

I have asked in this newsgroup before, and was told that if the Advanced Services are not used, then it does not matter that it was installed on a computer without IIS. It will simply function the same as SQL Express 2005. I presume that is correct (and seems to be by experience).

Question 1) To install a new named instance, I have to run the .EXE over again. What happens if I run SQLEXPR32.EXE for a new instance when I have already run SQLEXPR_ADV.exe for the existing instance of SQLExpress? Which should I use for the new instance when I really want SQLEXPR32.EXE installed?

Question 2) Additionally, I understand how to remove an SQL instance, but how do you remove the program itself, ie SQL Express with Advanced Services? Either version of SQL Express only seems to allow you to remove instances, not the program itself.


Question 3) Does SQL Express with Advanced Servies install additional programs to manage the SQL, or does it give extra features that can be used in programing, or both?

Thanks
Bob