if you want to hide the version of XCHAT that you are currently using, then do two things
1. click on 'Server' and tick 'hide version'
2. click on 'Settings', 'Lists' and CTCP Replies
if VERSION is not listed there, then ADD it
paste in the following text, or edit it yourself to say something l33t :P
Code:
nctcp %s VERSION mIRC 5.91 (16 bit) for Microsoft