Ok this may not be the best place, but I have asked over at XFCE as well.
How do I start different applications in different screens when I start XFCE? is it even possible?
At the moment I start sylpheed by adding the line
to .xinitrc, but I also would like to start firefox on screen 2. Is this possible??
What exactly do you mean by "screen"? A virtual desktop window or the real screen (and display) as in X config?
Then AFAIK there is no such utility in base xfce packages. You can use kde's kstart (not a perfect solution since you probably use xfce for it's simplicity and small size :-)) or you can use one of xfce's goodies called devil's pie. Now frankly I have no idea how this works because I'm not using it. But I've found about it searching xfce forums:
Unfortunatelly there is some problem with
http://xfce-goodies.berlios.de/ and I can't view it.
Here is a direct link to Devil's pie homepage
and xfce goodies link from google's cache
http://184.108.40.206/search?q=cache:YA … dies&hl=en
I think you can request a package if you can't make it yourself. That's all I know for now :-) I hope this helps.