Technically i have enough XP for Lv51 now and have gone up a level or so on my small arms and SMG skills too. Even though the $ counter has maxed out at 9,999,999 any dosh you collect goes somewhere, i bought myself a new SMG to mark hitting the big 5-0 and it cost me just north of 1.5 million and it didn't even dent my cash balance, totally worth it though, gonna be ripping some Zombies a new one once i get around to playing The Island of Dr Ned.
I have come to the conclusion that 4 player co-op is full of win.
Currently upgrading the HardDrive in my friends PS3 to 250Gb, installing the back-up as i type, about an hour or so to go.. fingers crossed it all goes to plan as we had to load the Firmware from a USB drive this time, i don't remember having to do that on my PS3, odd, but then again i did format my drive before i nailed it in the consoles casing. i did try to get him to let me load FW1.6 just for shits and giggles but he didn't want to play. boo hiss! :) we could have upgrade afterwards still.