First check out, if you actually deleted Solitaire:
- Go to Start then click "Run"
- Insert this: "sol.exe" (without the quotes)
If solitaire opens, then it means it's on your computer, in that case, go to: C:\Windows\System 32 and look for the file called "sol.exe" and drag it to your desktop.
If Solitaire didn't open from run (i.e you have actually deleted it) then Try this:
- Go to the Control Panel
- Open "Add/Remove Programs"
- Along the left side, click "Add/Remove Windows Components"
- Double click the "Accessories and Utilities" option
- Double click the "Games" option
- Select "Solitaire"
- Click OK two the two screens you just opened
- When you're back to the orignal window, click "Next" and Windows should install the game.