Hi. I got my first Mac (iMac) a few days ago -- I've never used the OS or the machine itself before and it isn't to be touched unless Christmas day. () Anyway, I wanted to upgrade the RAM from the original 2GB to 4GB. I've never upgraded a machine before, and have no knowledge on what specifications the RAM needs to have. The iMac is Apple's current generation 24", 2.8GHz (aluminium), which is currently priced around £1150. I used Crucial's online advisor tool and it gave back the following result: http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=39D3BF46A5CA7304 I simply wanted to check if this is the correct memory for my machine before I ordered. Thanks.