After copying the pst, close outlook, then
Microsoft Office Outlook 2003 and Microsoft Office Outlook 2007
On the Tools menu, click Options.
On the Mail Setup tab, click the E-mail accounts button, even if you do not have an email account specified.
On the Data Files tab, click Add.
Click Office Outlook Personal Folders File (.pst), and then click OK.
Find the new location for your .pst file, and then click OK two times.
Click Set as Default.
If this is your default e-mail delivery location, you will receive the following message:
You have changed the default deliver location for your e-mail. This will change the location of your Inbox, Calendar, and other folders. These changes will take effect the next time you start Outlook.
Click the .pst file that was identified in step 4 of the "How to identify the name and location of your personal folder file" section, and then click Remove to remove the local .pst file from your profile.
Click Yes, click Close, and then click OK to close all dialog boxes.
On the File menu, click Exit.
Did you follow this step by step and restart outlook again
I'm confused as you marked the thread solved.