This one by Neil is supposed to and it's free. https://www.wincustomize.com/skins.aspx?skinid=383&libid=50

In Vista, if your running 2 monitors out of 1 video card I believe they all work but the dream is the same on both monitors, 2 identical pictures not one dream stretched across the two.

Thanks guys.  Neil's Ovals ran on both monitors for me.  Couldn't get Muckyman's Fractal Strings to go on both monitors - could be my old bucket of bolts machine here, even the single monitor wmv's hit me pretty hard.

Feeling like a cheapskate right now and don't want to cough up for a premium (yet), but at least it looks like it would be an option.  I wasn't sure this thing would even pull one at all - there's only so much you can do with duct tape and velcro

here's a few of mine that work well on two monitors...

Not exactly what the OP was asking for but these do work very well.

Bars

Fire

Webs

Silver

Squiglier

Color Flow

FireCurtain

Marching Lines

Checkered Curtain

Blue Plasma Desktop

Wiggle - 3 Pack (Red, Green, Blue)

Thanks CarGuy, now I've got a some more nice dreams .  But no, not the XP dual monitor solution I was shooting for but I can see where they might have an extra edge on Vista.

I think Lantec read me right and you as well in your first reply.  After going back through some postings to get the verbage right I guess what I'm really asking about is "Dynamic Dreams specifically written with dual monitor support" like Shirley referred to in Reply #2 here:

https://forums.wincustomize.com/344286

and Neil referred to in Reply #4 here:

https://forums.wincustomize.com/330425

Otherwise at least on XP in extended mode they only run on the primary monitor and leave the secondary monitor blank.  (What I do, and it works pretty well, is start the dream - which leaves the secondary monitor blank, pause the dream - which puts a still-shot on both the primary and secondary, then re-start the dream - which leaves the still-shot on the secondary.)

Not a huge deal.  I'd just seen it pop up a couple of times and was wondering about any dual-enabled dreams myself so I thought I'd ask about it, wasn't having much luck strolling through the gallery.