laurentio laurentio is offline

I have a problem with my windows xp sp3. For some reason the internet option in the control panel is missing. In internet explorer, I am unable to right click and the menu bar is blank. I am unable to access the internet options to change settings and also when I try to download some software especially security ones to check if I have a virus, it opens another window and quickly disappears. I have tried to go into regedit to follow instructions but to no avail. I have installed malware and spyware software but these are unable to detect any viruses or spyware. Also in the add or remove programmes, ie7 does not have the change/remove option so I am unable to delete and re-install.

How do I go about having my internet options showing again in the control panel and also to be able to have my menu bar showing again in internet explorer?

Thanks.