Hi Tom,
Sorted it out....
After contacting webhost, it seemed nothing wrong overthere...
Followed your advise and purchased PC Tools + Antivirus and the threat was deteted (Spyware.Known_Bad_Sites).
Also modified some settings in IE for "Privacy and Security"). (Banned testenhance.com and textsrv.com sites).
All works well, no unexpected links to other sites.
Cheers,
Arthur