Yes autocutsel works with RH 9.0.
First of all make sure you have you select/copy/paste basics right:
In Windows you have to select your text then manually opt to copy it to the clipboard, paste is also a manual/menu option, or often right click.
In *nix when you select text in a window it automatically gets copied into the CUTBUFFER, and to dump that text to a window you use middle click. The new copy/paste function that gnome and kde support use the PRIMARY selection buffer which is totally separate.
The problem is that VNC only uses the CUTBUFFER, so the solution is to use xcutsel or autocutsel to synchronise these buffers.
more info here: Q25 [ http://www.uk.research.att.com/archive/vnc/faq.html#q25 (http://www.uk.research.att.com/archive/vnc/faq.html#q25) ] and pipermail [ http://www.realvnc.com/pipermail/vnc-list/2003-February/037299.html (http://www.realvnc.com/pipermail/vnc-list/2003-February/037299.html) ]