X server compression settings?

I'm connecting to a remote machine and want to use X server.
However the connection is a bit slow and I'm wondering if
there are any compression settings that i could enable
on the machines to improve performance. I know that
for TS or vnc there are settings to change number of colors
displayed, resolution, bitmap caching etc. In my case
the remote machine is Centos(xclient) and the local machine(xming
xserver) is windows XP.

thanks for any suggestions.