Mono 2.0 problem

[erusmenac]

Hello people. I have installed ubuntu 8.10 recently and mono 1.91 is coming with it.

I need to write a short program in c# which is basically benefits from the System.DirectoryServices.dll in .net framework. I have checked the mono-project.com and in there i can see even 1.9.1 supports that dll. But when I write a program in windows environment and try to run on ubuntu it gives me an error like nullreferens for System.DirectoryServices.dll.

After that i have installed Monodevelop on ubuntu. Tried to write the same program with it. When i right clicked to the project and said Add Reference, i couldnt see System.DirectoryServices.dll ! Even monodevelop doesnt have this dll on Monodevelop. And I am using the latest version.

Can anybody explain me why i cant see and use that dll ? Main Page - Mono please check it if im wrong..

I tried to uninstall mono 1.9.1 but i couldnt. I tried to install mono 2.0 without removing the old version, it was successfull but when i type "mono -V" on terminal it tells me 1.9.1 as version number again

And I couldnt find anyway to uninstall mono 1.9.1 ..

can anybody answer any of my questions ?
Thanx from now..

[erusmenac]

hello people , as far as i can see nobody replied on my question. But i want you to know that after several restarts now i can see 2.0 as a version number when i type "mono -V" on the terminal screen. Now its ok.
I can run the applications written on windows platform which uses System.DirectoryServices.dll on Linux platform.
But now i cant develop any software which is using the same dll on Linux I am able to run but not able develop its weird