It appears to be working now. I uninstalled and reinstalled PF3, had no sound, reinstalled the Direct x files and now have sound and the display windows so hopefully everything is ok now.
Will do a test flight this evening and report any probs. Hopefully everything will be ok as its driving me mad trying to troubleshoot all of last night and today. I think the display problems were caused by items being unchecked in the advanced options page. My fault for not reading the manual thorough enough.
many thanks for all your help.
Regards
Richard