IE7 displays blank content on webpages with active content

Read both Stories...to give appropriate answers

Short Story:  After removing Mcafee and removing all registry references manually, IE7 began failing to display content on web pages (i.e. Google Search works fine, Google Maps doesn't show the map) including the MS runonce test, nor various flash based content.

Attached is a word document that represents "no error" web pages that reveal no content.  The sites "download" content but end up blank.  See attached.

Long Story:  My office upgraded laptops and I received an older Dell D820 with XPsp2 installed for my personal use.  Well, the IT guys uninstalled Mcafee anti-virus before handing it over to me and said I could easily get rid of the "splash screen" that was popping up at boot up even though McCafee was uninstalled.  Well, I went through and eliminated all registry items that had the word McAfee (sp?).  I hate that bloated virus program...anyway, shortly after I began receiving pop ups for InstalShield updates but upon clicking, the install shield 'window pane' had blank content (nothing to click).  The annoyer would constantly turn on.  In addition, and about the same time, IE7 began exhibiting blank web pages.  For instance, Google Maps would show downloading all the appropriate objects but would simply be blank (see attached), while the google front end search engine page would work perfectly.  Also, Flash was installed, yet often a page would say that my flash was not installed...

I tried removing IE7 (jumping back to IE6), using the IE7 repair and setting everything back to default, nothing resolves this behavior.  I have verified that I do not have a virus, spyware, or any other hijack effecting the system...can you help me stave off reformatting the system?  Firefox works fine...

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