I am using SCUMMVM version 11.1.. I got the answer from Duncan another member on here, also I did read that post before, thanks anyway Bundyo. In case someone else stumbles across this thread and also needs the solution, here is what I did after asking Duncan what he did.

Other n00bmasters (like me) follow this..
In Xterm type "cp /home/user/.scummvm/comi.s00 /home/user/MyDocs"
That copies the save to your MyDocs directory which you will need to install emelFM2 on your IT to browse to that folder and put that save file from MyDocs to your SD card which you then browse on your PC and copy over, play past that point on windows or your (upchuck) mac, then copy that save file (comi.s00, comi.s01 etc etc back to your MyDocs then back in xterm do the opposite: "cp /home/user/MyDocs/comi.s00 /home/user/.scummvm"

That was for anyone who might need help with part 3 in The Curse of Monkey Island, most of you I know, are learnED well beyond my knowledge with ITs..