Sometimes it really is better to turn the darn thing off, and call it a day.
You deleted one of those shared files by accident. Windows will inform you of your error the next time you restart your computer. It will give an error message saying can not load such and such .dll. Reinstall the program that you recently deleted. After doing this restart your computer and see if the error message went away. If it did uninstall the program a second time. Be careful not to delete the shared file this time. You should be back in business. Hopefully....
"But, I threw away the disks or the CD that the program was on yesterday, and the garbage was picked up this morning." This has happened to me, more than once.
Always try to remember not to delete the zip file the program came from, if you are deleting a file that you downloaded from the internet.
Free File Recovery freeware downloadable at Major Geeks.com that lets you scan for deleted files and select the one's you want restored. Try running this software as near as you can to the date you accidentally deleted your files for the best results.
DriversKit or DLL Files
Braving Registry Sometimes you have to edit the to Registry. Back when I used Netscape I was in a state of panic whenever I had to reinstall Java. I was always sure at this point that I should have considered my program uninstalled when Add Remove Programs told me the program was uninstalled in the first place.
Many a brave soul quits at this point and learns to live with clicking on the OK button every time they start up their computer.
Ever get an 'Illegal Operation' or 'Page Fault' error message or some other cryptic message and wonder what it means? Below are free websites and a utility to charge to the rescue.
WinErrs is freeware utility containing a database of 1.554 Windows error codes and their definitions. These codes are extracted directly from Microsoft Windows and are their descriptions.
Wotsit.org the programmer's file and data format resource. Once in awhile it's useful to find out what program belongs to the file your looking at.