Fix & Repair in Outlook 2000

It's part of the Office update:

http://tinyurl.com/5kkl

Sorry, your question said "but can't find that SR on their site."

Have you run Scanpst.exe?

You say "cannot find a copy of SR-1 on MS..."

Here it is:

Microsoft Office 2001 Service Release 1
http://tinyurl.com/5kkl

Also:

SUMMARY
The Inbox Repair tool (Scanpst.exe) is designed to help repair problems that are associated with personal folder (.pst) files. The Inbox Repair tool is included on the first Microsoft Office 2000 CD-ROM.
MORE INFORMATION
The Inbox Repair tool is automatically installed with all English-language Outlook installation options depending on your operating system.

For Microsoft Windows NT and Microsoft Windows 2000:
C:\Program Files\Common Files\System\Mapi\1033\NT

For Microsoft Windows 95 and Microsoft Windows 98:
C:\Program Files\Common Files\System\Mapi\1033\95

Unlike the Microsoft Office 97 version of the tool, Office 2000 does not place the Inbox Repair tool on a menu. To use the tool, locate one of the folders by using Microsoft Windows Explorer, and then double-click the Scanpst.exe file.
The Scanpst.exe file is located on the first Office 2000 CD-ROM in the following folders:
Drive name:\Pfiles\Common\System\Mapi\1033\95
-and-
Drive name:\Pfiles\Common\System\Mapi\1033\NT