Did you try adding this older .PST file to your new Outlook profile, so you have both PST files listed in the View window in Outlook? You could then drag-n-drop from the old PST to the current PST all of your contacts.
Here is how you can go about this:
1. Quit Outlook.
2. Click Start, point to Settings, and then click Control Panel.
3. Double-click Mail (or Mail & Fax) and click Show Profiles. In "The following profiles are set up on this computer" list, click to select the profile you wish to add the local mail store to, click Properties, and then click Add.
4. In the "Available information services" list, click the type of service you wish to add, typically this is the Personal Folders (.pst) you want to copy from, and clickOK.
5. In "Create/Open Personal Folders File" locate and click the local Personal Folders file that you want to copy from (the older one). Click OK and then Close.
6. Start Outlook with the profile you just modified. In the Outlook folder list, you should see your original folders and the new Personal folders you added to the profile.
7. Locate the items you want to Move or Copy and either drag them to the appropriate folder or use the Move or Copy command on the File menu.
hope this helps
