[Help] SQL Server 2008 x MuServer Season 4

Hello, guys.

Can I use SQL Server 2008 Express Edition or is it recommended to use R2 Developer Edition?

Does Express Edition have any restriction or anything alike that could be a problem in the future?

Just for your information, I'm setting up MuEMU S4.

Thanks in advance.

And how about the OS? Which one would be better: Win 7 x64 or Win Server 2008 for example?

Thanks again!