There is a way but you will have to change the registerys. So if you are not familliar with reg editing DONT do this as you may currupt your computer.
X = whatever drive you installed combat arms on
1. copy your X:\Nexon\Combat Arms folder to your portable device/laptop/whatever
2. copy the X:\Documents and Settings\All Users\Application Data\NexonUS folder to the same area or a subfolder or however you like to sort your stuff.
3. go to the start menu, click Run, type regedit and click OK
4. navigate to HKEY_LOCAL_MACHINE\SOFTWARE\NexonUS and right click -> export, move it to your portable whatever
5. same as 4 but HKEY_LOCAL_MACHINE\SOFTWARE\Nexon instead.
-move to second computer/laptop-
6. navigate to your laptop/second computers X:\Documents and Settings\All Users\Application Data folder and paste the NexonUS folder (from step 2) into it.
7. the registry keys you copied in step 4 and 5 need to be added now, right click them and hit Merge, then click Run if windows doesn't like it, then Yes to "do you want to add this blah blah blah".