Microsoft Outlook to Thunderbird Portable

Hi All,

I am using MS Outlook 2003, now I want to change to Thunderbird Portable.
I downloaded the to Thunderbird Portable and went to Tools-> Import.
I took nearly 2 hrs to complete 7 GB data from Outlook to Thunderbird Portable.

But after this, I cant open the Outlook emails in Thunderbird Portable, and all of sudden found nothing in Thunderbird Portable which I imported from Outlook. It’s show just 38 MB size.
Where the 7GB data is imported from Outlook?

I tried twice, it’s the same result.

How can I import from Outlook to Thunderbird Portable and use it?
Please help soon
Thanks