I remeber having some laughs with irc and ms chat ...

As for IRC client, I used to use mIRC when I first learnt about IRC, now I have been through various clients for various OS's.. althought I never really relied on any big scripts that alot of people use.
At present I am using the free build of xchat 2, just take a
look at the good featuresThe only thing I find a bit annoying is the window redrawing.. some times I doesn't redraw the window so you have to manually resize/etc. to clear the funky visuals.
I also like to use the black theme, found
hereAll in all,
X-Chat 2 for Windows (free silverex build) is a decent client for windows

edit: well now i've switched back to mIRC, LOL.. i think f0dder had some influence over this..

but i think really when you think about it, mIRC is quite solid.. dispute all the haters of it.. and xchat is abit annoying in regards to window redrawing.. (or the whole gtk issue.. w/e) so I have removed xchat now, also the gtk files.. now i feel like ive cleaned up shop

hahaha.