Conflict after installing Gnome Desktop

Hello everyone. I’m new to Linux. I installed Opensuse 11.2 DVD on a machine with Windows XP. During the installation I installed the KDE desktop. I had not tried out the KDE desktop. I had a Live CD with the Gnome desktop that i had tried out and liked. I think I like the Gnome desktop better. Now I would like to run both desktops. After going to the install new software and changing the view to patterns and select the “Gnome Desktop Environment” I get this error.

YaST2 conflicts list - generated 2010-03-18 09:47:52

pattern:gnome-11.2-20.22.1.i586 requires patterns-openSUSE-gnome, but this requirement cannot be provided
uninstallable providers: patterns-openSUSE-gnome-11.2-20.22.1.i586[11.2 - Main Repository (OSS)]
patterns-openSUSE-gnome-11.3-1.1.1.i586[http-download.opensuse.org-ea995f03]
patterns-openSUSE-gnome-11.2-20.22.1.i586[openSUSE 11.2-0]
patterns-openSUSE-gnome-11.2-20.22.1.i586[repo-oss]
] break gnome by ignoring some of its dependencies

 ] do not install pattern:gnome-11.2-20.22.1.i586

 ] deinstallation of patterns-openSUSE-kde4_pure-11.3-1.1.1.i586

YaST2 conflicts list END

I was able to install the Gnome Base system with no problems or conflicts.
What should i do? I would really like both desktops to work.

Thank you for your help.

Let use see what repositories you are working with.

post out put of

zypper lr -d

Thank you for helping.
Here it is.

| Alias | Name | Enabled | Refresh | Priority | Type | URI | Service

—±------------------------------------±-----------------------------±--------±--------±---------±-------±----------------------------------------------------------------±-------
1 | 11.2 - Main Repository (OSS) | 11.2 - Main Repository (OSS) | Yes | Yes | 99 | yast2 | Index of /distribution/11.2/repo/oss |
2 | 11.2 - VideoLan | 11.2 - VideoLan | Yes | Yes | 99 | rpm-md | Index of /pub/videolan/vlc/SuSE/11.2/ |
3 | Libdvdcss repository | Libdvdcss repository | Yes | Yes | 99 | rpm-md | http://opensuse-guide.org/repo/11.2/ |
4 | Packman Repository | Packman Repository | Yes | Yes | 99 | rpm-md | http://ftp.skynet.be/pub/packman/suse/11.2/ |
5 | http-download.opensuse.org-ea995f03 | Updates for openSUSE 11.2-0 | Yes | Yes | 99 | rpm-md | Index of /update/11.2 |
6 | openSUSE 11.2-0 | openSUSE 11.2-0 | Yes | No | 99 | yast2 | cd:/// |
7 | repo-debug | openSUSE-11.2-Debug | No | Yes | 99 | NONE | Index of /debug/distribution/11.2/repo/oss |
8 | repo-non-oss | openSUSE-11.2-Non-Oss | Yes | Yes | 99 | yast2 | Index of /distribution/11.2/repo/non-oss |
9 | repo-oss | openSUSE-11.2-Oss | Yes | Yes | 99 | yast2 | Index of /distribution/11.2/repo/oss |
10 | repo-source | openSUSE-11.2-Source | No | Yes | 99 | NONE | Index of /source/distribution/11.2/repo/oss |
alex@linux-b518:~>