Suggest _ Free
Firewall: PCTools (or Comodo but this is a bit intrusive)
Anti Virus - MS Security Essentials or Avira
Anti Malware - Prevention - Spywareblaster
Anti malware (scan) : Malawarebytes and Superantispyware
Reg Cleaner and clean up : CCleaner
Others may prefer Avast as anti virus.
I use the above with no probs om W 7 64bit.
Also I would pay for Acronis True Image 2010 and regularly do an image and or a clone.