[Mono-list] targeting and running a specific .Net version

[Ben Aurel]

hi
when I look under mono/lib/mono/ I see 4 different versions:

1.0        2.0        2.1        3.5 

I assume those version numbers are equivalent to the .net version 
numbers. What do I have to do if I want to compile for a specific and 
run a specific library version?

1.) building for a specific .net version with "Xcs":

Is this the correct and only way to specify the version?
#  mcs => 1.1 runtime.
# gmcs => 2.0 runtime.
# smcs => 2.1 runtime,


2.) running with a specific version with mono:

how is this done?
with the --runtime parameter?

compiling for and running with 2.0:
---------------------------------------------
$ gmcs WriteFileTest.cs

$ mono --runtime=2.0 WriteFileTest.exe

WARNING: The runtime version supported by this application is unavailable.
Using default runtime: v1.1.4322
----------

Somethings seems to be wrong here...

Thanks in advance for your help
BEn