Homebrew PCBs

Hello all,
       I've enjoyed following along with all the conversations about 
PCB design software. I'm getting close to being ready to transfer all 
my hand drawn designs into the PC and was wondering if any of you 
know which (if any) of the software packages have the ability to TILE 
PCB's. I have a few Sub-Modules that are just under 1.5" square and 
I'd like to tile them 2 wide by 4 high making a board rounghly 3" X 
6" in total. The remainder of my boards are 1" multiples of 6" long 
so this would work out perfectly. I'm hoping to eventually take the 
files to a local PCB manufacturer to be professionaly done.

 Any help or suggestions would be GREATLY appreciated.
All the best....Dean.