'Class not registered' message when browser tries to display pop-up window

I am running Windows 2000 SP4 which has recently been reinstalled.  I have a couple of web sites that I go to that run java scripts that pop up a new window that should contain a report of some sort but all that appears is an empty window.  The parent window indicates an error which, when I display the error, shows me that a service is not registered.    I am running 1.3.1_01 and 1.4.2_05 for Java versions which have been uninstalled and reinstalled a number of times.

What else might I try?
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SheharyaarSaahilConnect With a Mentor Commented:
May be the suggestions here can help !!

Error Message When You Browse the Web: An Error Has Occurred in the Script on This Page

And if still no luck, then try running this tool:
( site credit goes to Ramesh >> http://www.experts-exchange.com/M_926622.html :)

Asta CuCommented:
Any indicators on which services are shown as not registered?  I've seen similar strangeness and it had to do with the way the site is scripted; and found that the actual data resides in a background window; have you checked to see if there are multiple windows that result and could be hidden?  Does F5 or CTRL+F5 bring them up?  Anything shown as damaged in your Downloaded Program Files Folder?  Can check folder directly or from IE - tools - internet options - general - temporary internet files - settings - View Objects.  Any shown as damaged or unknown, delete and close IE for settings to take and try again.  Could also be settings issues.
Asta CuCommented:
":0)  Happy that SheharyaarSaahil helped you find the solution.
Asta,, u sounds so sweet sometimes =)
Asta CuCommented:
":0) Thanks a bunch.  Teamwork works so well.  I love it!  Hats off to you for helping so many; we are on the same page, very often!
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