“Not enough memory” Error on Microsoft Outlook 2007

Cheers to everyone on techyv!
I was using Microsoft Outlook 2003 when I received an error message that says Outlook "cannot open default folders".
Because I do not exactly know the nature of this error, I tried to do some research about it. I think that I have already tried almost all of the advised solutions that were mentioned on this website, but I am still unable to resolve this issue.
With this, I decided to buy Microsoft Outlook 2007, which basically solved the earlier problem.
However, I am unable to send or receive messages, and it gives me the "0x8007000E" (not enough memory) error.

OutIook Send/Receive Progress
1 of 2 Tasks have completed successfully
Dont show this dialog box during Send/Receive
Task ‘SiteWizard Archive – Receiving’ reported error (0x8007000E) ‘Out of memory or system resources. Close some windows or programs and try again.’
I hope that there will be someone who can help me with this problem.
Thank you so much in advance!
