Hi
I should say this of course Avast Home edition {ver4.7}.
I have been using it form past year and faced no problem
You can get the download & registration key here:--
Avast
Or the install sheild can be obtained from this month digit.:hap2:
Get it soon.
Some features:---
ANTIVIRUS KERNEL
Almost 100% detection
Outstanding performance
Reasonable memory requirements
ICSA certified
USER INTERFACE
Memory test during the program startup
Very intuitive Simple User Interface
Testing whole disks or selected folders
Working with the scan results - actions with infected files
Virus encyclopedia
Log Viewer
Various appearances - skin support
Running from Explorer context menu
Antivirus screen-saver
UPDATES
The system of incremental updates guarantees low traffic
The updates can be completely automatic
RESIDENT PROTECTION
Standard Shield protects the file system
Generic SMTP/POP3/IMAP4 scanner
Specific MS Outlook plugin
Heuristic analysis in e-mail modules
REPAIRING
Limited capability of direct repair (especially macroviruses)
Repairing files using automatically generated Virus Recovery Database (VRDB)
PLATFORMS
Windows 95
Windows 98
Windows Me
Windows NT 4 (No Server)
Windows 2000 (No Server)
Windows XP (No Server)