cheers rythmteck gave your suggestions a try but no joy. i am using usb 2 port used the asio full duplex driver this helped to stop it crashing but the anoying little click is still there i am definatly going to get some more ram (as only have 448mb) but can't afford at the mo as i have no job.
Dan the acid man i am running on windows xp and using cubase sx 3. my anti virus is avg free version 7.5 and i don't think i am running any other programs - i try to keep this computer as empty as possable, just for studio use.
thank you very much for all the suggestions to you both i was always weary about posting on forums as noobs can cop some abuse at times but you have been kind
thanks
joseph