Have downloaded Microsoft's Anti Spyware program, an attempt by them to tackle the huge mal/spyware market of programs out there. I thought I'd give it a go. Available at their downloads page. It's a Beta program, so no support as such, but personally I'm feeling good about this.
It actually is looking promising, but it's early days .
I like the interface and it's easy to navigate.
A feature is linking all users , if you permit, to connect and collect information and spread to the network of users new mal/spy-ware instances and collect and share that info. I'll see how it goes, but this program looks very promising.
I'm keeping Ad-Aware , and just using the XP sp2 Firewall. Sygate firewall is a consideration , if XP SP2's isn't adequate.
If others have any feedback from their use of MS Anti Spyware I'd love to hear from you.