2 trackballs in regular mame on winxp

[crashwg]

I'm a little confused.  Trackballs and light guns work in pretty much the same fassion when it comes to mame right?  Mame just thinks its a mouse if I'm not mistaken.

So I'm reading this post http://www.arcadecontrols.org/yabbse/index.php?board=1;action=display;threadid=16472 and I notice that there is talking about how you can use 2 act-labs tv light guns with mame (not analog mame) in winxp on a tv connected to a computer.  
Wouldn't that mean that two trackballs should work under mame on an xp machine?
If that's true, I may just have to rethink my cp designs...

Yes, I know I posted this alredy, but I got no response so I posted it again