I'm assuming that VirGuard is a virus scanner. Viruses and spyware aren't the same and you need different tools (or a suite) to tackle them.
I've never heard of VirGuard but you should be looking for 'best of breed' in each category of:
i) spyware/adware removal
ii) Virus scanner
iii) Personal/Hardware firewall
Yes you can get a suite that handles them all but also you download 'free' individual utilities. There's another thread on this here:
I'd recommend AVG for virus and I use winpatrol to keep an eye on spyware/browser hijacking and I've got a hardware firewall in my adsl router and I haven't had any probs.