You cannot. The file format changed a bit.
You could use the Express version of VS 2005 which are free to install.

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HTH
Éric Moreau, MCSD, Visual Developer - Visual Basic MVP
Conseiller Principal / Senior Consultant
Moer inc. (http://www.emoreau.com)
> hi,,,
> I have a sample code in VB dot net 2005. I have only VB dot net 2003
> installed. How can I opn the VB.net 2005 project in VB.net 2003.