Vista - not able to access some sites

I am facing a problem with inmternet explorer..

I am able to open only Google.com, orkut .com and Gmail .com from my Acer
laptop with Windows Vista Home Premium...
But all other sites are not opening..
Can some body help me to sort out this problem,...

Thank you

"Vishalg" <vsg1278@xxxxxx> wrote in message
news:FDE82E55-84D2-4DE4-9647-60E1C9B84496@xxxxxxError message after you install a Windows Internet Explorer 7 update from
Windows Update or from Microsoft Update: "Webpage cannot be displayed"
http://support.microsoft.com/kb/942818

From Robear Dyer (PA Bear)

If tweaking your third-party firewall's settings don' help, try the
following:

1. Disable your anti-virus application, any real-time protection provided by
an anti-spyware application (except for Windows Defender; includes Spybot
Tea Timer, SpySweeper Guards, AVG AS guard.exe, etc.), disable any
third-party firewall AND enable the Windows Firewall.

NB: If you're running ZA Free firewall, you may need to uninstall it instead
of disabling it. You're "working without a net" now: Don't to ANYTHING else
online (e.g., browsing; reading email; chatting) except #4 below until your
anti-virus application has been re-enabled!

2. Uninstall "Security Update for Windows Internet Explorer 7 (KB939653)"
[or "Security Update for Windows XP (KB939653)"] via Add/Remove Programs
(make sure Show Updates box is checked at top right) and reboot.

3. Re-do #1 above.

4. Go to http://windowsupdate.microsoft.com and install any Critical Updates
offered. If "Root Certificates" update is listed in the Optional Updates
category, you might install it, too, to take full advantage of IE7's
additional security.

5. Reboot > Make sure everything in #1 above is enabled again and, if
applicable, disable the Windows Firewall and enable your third-party
firewall.

--
Frank Saunders MS-MVP IE,OE/WM
www.fjsmjs.com
Do not send email

Vishalg wrote:
There could be a number of reasons for this so be patient and someone
will get there eventually.

Security software can do this, but so can spyware or other unpleasant
things so please list what anti virus and other security you use. While
you are at the computer search for a file called "HOSTS" that also can
be corrupted and give trouble. Don't remove it, just see if it's there.

Also look at IE security settings and see if they have changed, you can
try resetting to defaults and see if that helps, though I don't really
think that's the problem.

Also, how do you connect to the internet, cable with modem, cable -
modem and router or what?