can someone help, i think i've found a block and it got rejected? nothing in the wallet and no accepted shares just a lot of rejects. do i just have to wait for confirmation or am i missing something? cheers

I don't think you are doing anything wrong, just sometimes you get unlucky and get a rejected Block. What are your CGMiner settings and Diamond.conf?
0 accepted shares and >188,000 rejected ones???
There's something seriously wrong with your setup! If you're solo mining (which I doubt), the number after the A: in cgminer shows how many blocks you've found successfully and the number after the R: shows how many you found but were rejected (orphans, etc.). If you're pool mining, you're not connected correctly to the pool (check your settings).