cant connect to internet through router

[AGENT 47]

hi,
i have 3 computers in all, my other 2 computers are ok, but my pc is very slow on the net,
and sometimes when i start my pc i cant connect at all?
they all have win xp pro and are all similar,
i am on broadband with tiscali & i have an adsl router wich i use network cables to connect,
when i first set it up it was ok,
has any1 got any ideas please!

thanks, agent 47.

[classicsoftware]

It appears you probably have some time of malware on your PC.

I would download a copy of Hijackthis (http://www.subratam.org/main/index.php?option=com_content&task=view&id=19&Itemid=41) and install it into a permamanent folder.

Click on the icon and choose the option to scan and create a log.

Post the contents of the log here for review.