Online services (Warranty/virus) Seagate :

http://support.seagate.com/customer/warranty_validation.jsp

Samsung:

http://www.samsungindia.com/scripts/hdd_replace/hdd_replace_wcms.asp

Micro soft genuine:

http://www.microsoft.com/Genuine/

free online virus scan:

1. http://onlinescan.avast.com/
2. http://security.symantec.com/sscv6/default.asp?langid=ie&venid=sym
3. http://us.mcafee.com/root/mfs/default.asp
4. http://www.bitdefender.com/scan8/ie.html

messenger

yahoo : http://messenger.yahoo.com/download/
google : http://www.google.com/talk/
rediff : http://messenger.rediff.com/newbol/
live (msn) : http://get.live.com/messenger/config