How to resolve “‘Edit Document’ requires a Windows SharePoint Services-compatible application and Microsoft Internet Explorer 6.0 or greater” error

To resolve this issue, I had to un-install the Office 2003 SharePoint Support, and then re-install it. Here are steps I used:

1. Click Start, and then click Control Panel.
2. Click Add or Remove Programs.
3. In the list of currently installed programs, click Microsoft Office 2003, and then click Change.
4. Click Add or Remove Features, and then click Next.
5. Click to select the Choose advanced customization of application check box, and then click Next.
6. In the Choose update options for applications and tools box, expand Office Tools, click the down arrow next to Windows SharePoint Services Support, and then click Not Available.
7. Click Update.
8. After the update is done, repeat the steps from 1 to 5.
9. In the Choose update options for applications and tools box, expand Office Tools, click the down arrow next to Windows SharePoint Services Support, and then click Run from My Computer.
10. Click Update again.

Reference:
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