Mayhaps permit you to get to the control panel and add/uninstall programs...
Educated guess only....
Wings
Your computer is infected with a virus. That virus is called Microsoft Windows, or something spawned thereof.
Seeing that your beard is gray, I can only imagine rubber stock as a wise investment.
SAS is the most thorough sweeper on the market today, IMO, and may take 45-60 minutes to run, but will fix problems usually only found/repaired by HiJackThis.
Use the link below to download SuperAntiSpyware:
http://www.superantispyware.com/downloadfile.html?productid=SUPERANTISPYWARE
It's a direct link. After you clean your PC, you can uninstall it if you want. It's 100% free (this version).
---I'm no expert but if you can get to "system restore" in help and go back a few days that might fix it--????
Then, after Graybeard58 gets his spyware problem resolved, I say we track down and murder all of the people who inflict spyware, adware, malware, virii, and spam on humanity, and roast marshmallows over their burning corpses.
Hit CTL-ALT-DEL and bring up the task manager. Hopefully, you will spot Spy Marshall on the processes tab. If something looks obviously "Spy Marshall-ish" on the list, right-click on the entry and select "end process". If nothing looks obvious, you may have to Google the ones you don't recognize. Once the process is stopped, you should be able to run the uninstaller. Make a note of the process name. If the little bugger reinstalls itself, and yes, they do that sometimes, you may need to find it in the registry. (From the start menu, click "Run..." and then enter "regedit".) From there, you can rip it out by the roots.
(The standard disclaimer about messing with Regedit and turning your machine into a doorstop applies. YMMV. Void where prohibited. Do not use while operating heavy machinery. Discontinue use if a rash develops. May cause constipation.)
It can be removed with virus scanners, Ad-aware, Spybot S&D, HijackThis and Windows Defender and a lot of hunting files and registry entries. I removed one from a network machine once and it took a lot of work. The key was finding the install time and date and looking at what files were changed/added at that time. I had to clean registry entries for every user that had logged on while the program was active.
The good news is that it probably doesn't install any real viruses/trojans that propagate other than itself but wants to make you think you have them so you buy the program. So you will probably be safe saving what you can and doing a re-install of the OS.
Get yourself a good antispyware program like CounterSpy from Sunbelt Software (http://www.sunbeltsoftware.com/CounterSpy-Download.cfm). That should clean that up for you.
I also suggest you upgrade to IE 7 to prevent this sort of thing from happening again.