Can access to Google only and cannot log on to other sites

Thank you for creating this site where we can get solutions to problems we encounter. My computer in which I installed XP operating system can only get access to Google website and cannot log on to any other sites. Kindly give me your assistance because this has caused me much worry. Surprisingly, other operating systems that I have on my other computers like vista and windows 7 operate efficiently. All my efforts to try and resolve this situation have proved futile. I am looking forward to getting feedback from you soon. Much gratitude.
