no, 4 can't do fluids.. you might be able to do your own custom ones but it'll be very hard...

4.5's fluids are awsome... I love them!.. still playing around with them

I found this sample video at A|Ws site of a fluid effect... so I got the AVI, converted it into SWF file.. sized it down, and exported it into GIF... but it's still 500KBs so I can't have it as an Avatar

even if Kevin was kind enough to upload it from the AdminCP, it'll be still slowing down the 56K-ers here....