Increase Microsoft outlook 2007 PST file limit

I am unable to send/receive any emails in my MS outlook 2007. I am prompted with the following error

Can't move the items. The file <path>\<filename>.pst has reached its maximum size. To reduce the amount of data in this file, select some items that you no longer need, and then permanently delete them.

I looked up this link to understand more but my registry doesn't have the required entries.

Has anybody else faced the same problem ? If so can you please help me out ? Its urgent as i have a very important demo tomorrow. Thank you.

I'm assuming that you're not using the new Unicode pst file format in Outlook. This article explains how to create a new Unicode pst file and import your old pst file in to it.

http://office.microsoft.com/en-us/outlook/HP100807001033.aspx?pid=CH102499831033

Also, this link explains the size differences in the pst file formats:

http://support.microsoft.com/kb/830336

And this link explains how to configure the file size limits:

http://support.microsoft.com/kb/832925/

Archive is your friend. You shouldn't need all that email in one PST file. Search crawls and it's generally information overload. I typically send everything for a year to an archive folder. So I have an archive for each year. I figure if I haven't touched it in a year I probably don't need it at my fingertips. And the archives are readily available in the tree in Outlook anyway.