[CentOS] Gnome 2.x window placement

When starting a program from the commandline in C5, is there any way to
specify where on the screen the resulting window will be put?

I have a nuisance of a problem: Running rdesktop with the -D option
(which hides window decorations, making the rdesktop window appear
borderless), one cannot (as far as I can figure out) drag the window:
there are no borders to grab, and alt-drag doesn't work either.

it's always opening in a place that covers other windows, and I can't drag
it away from there. 

specifically: I want to run two instances of rdesktop, and it always
plunks the second one right on top of the first one. since I can't drag
either of them, I can't see them both at the same time. (I "carefully"
configure each of them so they are the exact size of the physical screen,
so that it looks like a real windows session, and also prevents me from
casually/stupidly closing the entire RDP window by accident.) Since I have
two displays, I'd like to place one of them on each screen, by itself.

Anyone know how to solve this?

thanks!

Fred
-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
                      The eyes of the Lord are everywhere, 
                    keeping watch on the wicked and the good.
----------------------------- Proverbs 15:3 (niv) -----------------------------