Battlefield 2142 1.5 patch problem

[extreme7]

I downloaded the 1.5 patch (which is 354 MB) and I played the game again, but no sign of the new server. I also downloaded the one that says full patch, but text edit comes up saying, "This program cannot be run in DOS mode." When I downloaded the one on the official website and patched it, right in the middle when its patching it says "Some files have been modified, please reinstall." Same problem with patch 1.4. Can anyone tell me what I need to do to install the patch, or what is wrong? Thanks.