A suitable freeware might even surpass or on par in performance compared to the available commercial software. Simple, Easy and Free. -myFree- listing as below:
-myFreeAV- Avira AntiVir Personal
-myFreeAntiSpy- Ad-Aware 2008 Free
-myFreeFirewall- Comodo Firewall PRO 3.0
-myFreeCleaner and Privacy Tool- CCleaner
-myFreeDefrag- IOBit SmartDefrag
-myFreeUtilities- Advanced WindowsCare Personal Edition