Thanks for the help rustle,
the problem arises when one of three programs are installed, these are AVG AntiVirus,Spy Bot remover or the updated drivers for Alcatel Speedtouch 330 Modem.
None of these are currently installed, will install each in turn and try to replicate the problem, hopefully i can identify which one causes the conflict.
Many thanks
Flying F
edit for Rustle: after the format and reinstalling Windows Me the graphics card and motherboard drivers were the next to be installed.