using mirc 6.1 with invision build 2520 now and it's working like a charm, ty to popweasal for the mirc 6.1 fix, cnills for the 2520 fixpack, and L|B for the soundfx suggestion.
Few simple steps for noobs:
1. first install mirc 6.1 from
http://www.mirc.com into this directory c:/program files/invision2
2. install invision 2520 into the same directory c:/program files/invision2
3. get the mIRC.v6.1--Invision.v2.0.bld.2520.ScriptGuard.Fix.v1.2.by.PopWeasel patch from
irc://irc.aXpi.net/andr and install it into the the invision folder.
4. go to irc.irchighway.net, join #invision and download the invision SoundFX2 file and the i2b2520.FIXES-07.17.03.zip fixpack.
5. follow the instructions on installin the fixpack and install the soundfx into the invision directory.
6. To turn off the annoyin invision logo when u start invision, type
/set %logoquiet on
and restart invision.
7. u'll get a scriptguard warning about the i2b2520.fixes.mrc script, to disable that, go to invision, main settings, protection, click the immune + button and add that script, or uncheck run scriptguard to turn it off altogether.
8. finally go to invision and save all settings. and u might wanna make a backup of the invision folder once u've installed everything.