garnome connection timed out

[general confusedrobot co uk]

I'm trying to update gnome with garnome, however when it is downloading it 
keeps timing out every few minutes until finally it just exits the program. 
This is driving me a little mad, as i'd like to be able to just leave it 
downloading, of course it isn't helping that i'm on a 56k connection but i 
have no choice. Is there anyway i can specify a mirror for it to use rather 
than gnome.org? 

Thanks,

Dan