Very Slow or Cannot Connect to Webpage when Connecting Wirelessly

Hello,

I have a Dell Inspiron Model 9300 laptop.  We have not used the wireless feature in about 5 months but when I try to connect to the internet now I make a connection with the Netgear wireless router but the webpage is very slow or times out after a few minutes and I cannot view the page. I am using Internet Explorer 7 along with Windows Service Pack 2.  It appears that a security setting is preventing me to view the contents of any webpage. I can check e-mail using MS Outlook Express with no problems.  When I was using Internet Explorer version 6.0 I had no problems connecting wirelessly.  Yesterday, I installed a software update for the Intel PRO 2200 wireless card thinking this may resolve the webpage display issue but it did not.  In fact, after installing the recommended intel PRO upgrade it altered how I log into my desktop.  The Welcome screen and Fast Switch modes have been disabled now and I log into my desktop using my ID and password in the login window.  What can I do to resolve both of these issues?:smileyhappy: