Import of Excel 2007 sheet into Sharepoint 3 : Method 'Post' of object 'IOWSPostData' failed

1. Open C:\Program Files\Microsoft Office\Office12\1033\EXPTOOWS.XLA in Excel.
2. ALT-F11 to open Visual Basic for Applications.
3. Right-click publishForm and "View Code".
4. Find the method Sub Initialize(List, Title, URL, QuickLaunch)
5. Change lVer = Application.SharePointVersion(URL) to lVer = 2 . For some reason, Sharepoint appears to return "0".
6. Save. This step is important...
7. Try again. Equally important...