shapping

have 2 sets of clients one on 192.168.0.0/24 and others on 192.168.10.0/24

and i want to set different levels of bandwidth for them useing pcq but when i make a flow for it and put in the source address for it, it dos not work, but if i leave the source and dest at 0.0.0.0/0 it all work..

can some one please tell me how to do this?

all the best

Did you read the manual???
read the queue section.

yes i did read it, but i must be more of a nob than i thought

If you follow this link, I think you can make your setup:
http://www.mikrotik.com/docs/ros/2.8/root/queue.content#6.54.7.2