Testing Mono's compatibility

[FoulDragon at aol.com]

So I'm told we need some form of .NET combatability for our FC4 server.

I fire up Yum and install the mono-complete package, but the resultant 
install seems to be incredibly easy to break.

If I just put

<% dim variablename; %>

it has a fit.

Error message: /tmp/apache-temp-aspnet-0/bbce3785/87108.0.cs(61,13) : error 
CS0246: The type or namespace name `dim' could not be found. Are you missing a 
using directive or an assembly reference?

Forget about anything more complex for now.

Is Mono more difficult to install than a conventional ball of RPMs?  Does it 
need some post-install cleanup?  Or is it just the .NET version of WINE, 
setting up elaborate dreams then leaving you wanting when it actually comes to 
compatibility?  Or am I misinterpeting the "ASP.NET for complete fools who can't 
understand why PHP isn't good enough" sites?