Another question: while reading the instructions on the link you've provide I got the feeling something has mentioned twice. 4, 5 and 6 seems exactly the same as 7,8 and 9. Although I expact some difference between the words 'Expand' and 'Collapse' those instructions seems the same as after following instruction 6 there is no file anymore named 'The Sims 3 Fast Lane Stuff.' Is that true? Here's an example.
Delete the Registry Keys:
1.Press the Windows key and press the letter R (this will open the registry if you're not already there.)
2.Expand HKEY_LOCAL_MACHINE.
3.Expand SOFTWARE. (Wow6432Node for 64-bit systems).
4.Expand Electronic Arts.
5.Expand Sims.
6.Delete The Sims 3 Fast Lane Stuff entry.
7.Collapse Electronic Arts.
8.Scroll down and expand Sims.
9.Delete The Sims 3 Fast Lane Stuff entry.
10.Expand Microsoft.
11.Expand Windows.
12.Expand Current Version.
13.Expand Uninstall.
14.Delete the following folder: {ED436EA80-4145-4703-AE5D-4D09DD24AF5A}