Sorted now, just installed the .deb file through xterm and its all good

Just use the search feature in these forums. I knew nothing when first coming here but learning! If you saved in Documents then navigate to there first so:

sudo gainroot
cd MyDocs
cd .documents
dpkg -i angrybirds-levelpack1_1_0_0_armel.deb

It will unpack and when you go back into ABs it will be sorted....hopefully