How to develop sharepoint portal in asp.net 2.0

Please refer the followingarticles

how to open share point templates in Visual studio .net environment ..

1.http://www.microsoft.com/downloads/details.aspx?FamilyId=3E1DCCCD-1CCA-433A-BB4D-97B96BF7AB63&displaylang=en
2.http://greggalipeau.wordpress.com/2008/05/18/developing-sharepoint-solutions-in-visual-studio/
3.http://www.devx.com/dotnet/Article/17518

what softwares are required for develop share point portal

1.http://www.microsoft.com/downloads/details.aspx?familyid=aa3e7fe5-daee-4d10-980f-789b827967b0&displaylang=en
2.http://search.techrepublic.com.com/search/microsoft+sharepoint+and+software+development.html