Sharepoint's installation

I'm a newbie in Sharepoint 2010 and need some help.

I have downloaded two programs från 开发者_StackOverflowMicrosoft Academy for students *SharePoint Designer 2010 (x86 - English) *SharePoint Server 2010 (x64) - DVD (English)

Which of these programs do I need I started installing?

I also heard that you need to have a server in order to use Sharepoint. In my case I only have a Dell laptop (XPS M1710) with XP pro.

can I still use Sharepoint with full utilization without using a server?

// Fullmetalboy

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SharePoint 2010 Server is 64-bit only, and can only be installed on a Windows Server unless you do a SKU Hack. Even then, I doubt it will want to install on Windows XP. Vista or Windows 7 is going to be required.

The designer is used purely as a simple content editor for an existing SharePoint installation.