Is it possible to run an older version of CO?

Hey guys, I was just wondering if it's possible to run an older version of Conquer Online with older un-patched files, and play online?

edit: I also want to ask if it's possible to play co w/o running the auto-patch.

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Im playing on this version and its still work :) I just updated itemtype.dat and i have to remember to dont click on items with no symbol on market. Thats y i never bought fake MetScrolls because i didnt saw them ;]