Hi BP

Yes Trillian 3.1 is in fact very easy to setup and use.
Plus it looks great (at least on XP) with the "transparent-enabled" skin that comes with it.
But in fact, it's quite heavy on resources consumption.
That's why I love Miranda-IM.
This one is very low on resources, it is free-open source plugin based.
That means you can choose from hundreds of features that you want (or not

) to be present.
That makes it possible to use it on a P4@2Ghz-1GB or on a PII@300Mhz-128MB.
I just have to disable the optional goodies on a slower PC and it still works like a charm.
The standard looks of it ain't much of a big thing but you can find some PACKs on the net such as this GANT pack
http://www.rico-morgenstern.de/miranda.
And there's something that bothers me a bit on Trillian.
That is, if I choose to use ICQ it will also load AIM at startup.
I know that both ICQ and AIM comms engine is the same but they could hide the AIM icon...
There are some Pro's on Trillian: hability to have a voice chat with someone else.
But take a look at Miranda's amount of features and plugins.
Well I guess that in the end it's a question of personal taste since all global instant message tools do their job.
Cheers