Had a issue after installing flash and Windows Essentials Movie maker

I recently did a clean install of Windows 7. All updates except for Silverlight, and 5 optional updates. Today when browsing the internet and watching some flash video, I got one of those pages that cant close. I did a scan on the temporary internet files and Microsoft Security Essentials found a virus and deleated the file. I also sent info to Microsoft. Everything seemed okay except suddenly All video, weather in a wab page or on windows media player whould stop about a third of the way through, and again every so often untill I pressed play again. And in a web page It would stop buffering the file as if it were done and I whould have to click ahead of the stopping point to get it to go. So I noticed that SQL server 2005( i thing it said lite edition), was installed. I did not install this. SO I uninstalld Flash, and Microsoft Essentials Movie maker, and SQL server dissapeerd on its own. Why does Essentils need SQL server to be installed and why dont they tell you that. It scarred the heck out of me. Anyways I havent had to do a system restore yet and everthing seems back to normal. Is there a way to install Movie maker without all this server connection stuff. Is there a free program anyone can recomend. One that will not cause problems or install other crap I dont want...

Yes After uninstall and doing a sys. restore.. and some reseach I see that is where SQL came from. Too bad I really liked Movie maker. It has some cool stuff for a free program. But somehow my system got out of wack. I am staying away from flash as well. From what I am reading it wont be long before it will not be used anymore. Too many security problems... Does any one have any good alternitives????? Something with no hiiden problems.. Anyways Thanks A Guy