Here are the things you will need to download to play:
WE FINALLY ARE NON HAMACHI!!! WOOT!
GrimMS DLLs and WZs: http://depositfiles.com/files/aa898c6hi
Extract that into a new folder.
GrimMS Client: http://www.mediafire.com/?q7cq2eb2bwjqq1g
Download that ^ which is the GrimMS client, (updated)
and then replace it with the one already in the GrimMS folder.
Replace the wz files with these~^^^