Recovering a mailbox in Microsoft Outlook

Recently our server crashed and we had to reinstall Windows NT4.0 and Microsoft Exchange.  I lost all my mail and I am only left with a file called exchange.ost(I used to synchronise my mailbox on desktop machine with my mailbox on the main server so that I could work off-line) which is on my desktop machine.  Now I want to access this file as it is the only file that I have which still has my old important mail. When I try configure my present mailbox to open it, I get the message that this file is configured for a different mailbox.  How can access my old and important mail?  
I now only have the .ost file and a different mailbox.  How can I access my old mail(open the .ost file)
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The Inbox Repair Tool
The Inbox Repair Tool (Scanpst.exe) can eliminate corruption of Personal Message Store (.PST) and Offline Message Store (.OST) files. For instance, it might be possible that corrupted folders no longer maintain a normal folder structure. These folders do not appear in the folder hierarchy because they cannot be displayed in the Exchange Client. The Scanpst.exe can reimplement these lost folders back into the folder hierarchy. (See Figure 15-9.)

The Inbox Repair Tool is installed along with the Exchange Client, and a you'll find the corresponding shortcut in the Programs\Accessories\System Tools program group. Unfortunately, the Outlook installation procedure does not create a reference to the Inbox Repair Tool in a program group, although it copies the binary file Scanpst.exe to the computers hard disk. In this scenario, you can find the Scanpst.exe in the C:\Program Files\Windows Messaging directory. The installation of the Exchange Client and Outlook is covered in Chapter 6.

maybe this can help you ?
G_maloAuthor Commented:
Edited text of question.
G_maloAuthor Commented:
I have tried using "Inbox repair tool" and still I cannot access the .ost file
G_maloAuthor Commented:
Adjusted points to 220
This page, specially right at the end might help.

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