Hardware:
Processor: 64-bit, dual core, 3 GHz
Memory:
- 4 GB for stand-alone or evaluation installation
- 8 GB for single server and multiple server farm installation for production use
Hard disk: 80 GB
Other: DVD drive (Recommended)
Software:
Database Server (Server Farm Installation):
- 64-bit edition of Microsoft SQL Server 2005 with Service Pack 3 (SP3)
- 64-bit edition of Microsoft SQL Server 2008 with Service Pack 1 (SP1)
Stand-alone Server:
- The 64-bit edition of Windows Server 2008 Standard with SP2 (Note: Highly recommend installing R2 or Windows 2008 with SP2 included as this will reduce the amount of required patching.)
- Web Server (IIS) role (Note: The installer will automatically install this role.)
- Application Server role (Note: The installer will automatically install this role.)
- Microsoft .NET Framework version 3.5 SP1 (Note: Installed by Prerequisites Configuration Utility)
- SQL Server 2008 Express with SP1 (Note: Not installed on Front End Web Role as part of Server Farm Installation.)
- Microsoft "Geneva" Framework (Note: Installed by Prerequisites Configuration Utility)
- Microsoft Sync Framework Runtime v1.0 (x64) (Note: Installed by Prerequisites Configuration Utility)
- Microsoft Filter Pack 2.0 (Note: Installed by Prerequisites Configuration Utility)
- Microsoft Chart Controls for the Microsoft .NET Framework 3.5 (Note: Installed by Prerequisites Configuration Utility)
- Windows PowerShell 2.0 CTP3 (Note: Installed by Prerequisites Configuration Utility)
- SQL Server 2008 Native Client (Note: Installed by Prerequisites Configuration Utility)
- Microsoft SQL Server 2008 Analysis Services ADOMD.NET (Note: Installed by Prerequisites Configuration Utility)
- ADO.NET Data Services v1.5 CTP2 (Note: Installed by Prerequisites Configuration Utility)
Client Computer:
Microsoft Silverlight 3.0
Step 1: Download SharePoint 2010 Foundation from MSDN or
http://www.microsoft.com/downloads/details.aspx?FamilyID=906c9f5a-6505-4eba-bf24-95e423ac1703&displaylang=en
Step 2: Run the Setup

Notes: Notice the revised installer. It resembles the installer for SQL Server 2008. The installer seems more intelligent then previous versions in that it can better detect missing dependencies and configure Windows 2008 Server Roles for the Administrator.
The Installation Guide Option is a link to an MSDN Article.
http://technet.microsoft.com/en-us/library/cc288005(office.14).aspx
Step 3: Install SharePoint Prerequisites
Notes: This step configures the server with necessary software for the SharePoint 2010 Foundation installation.
SharePoint 2010 Foundation Software Prerequisites
Or

Step 4: Agree to terms and service

Step 5: Choose Standalone to create a development or demonstration environment.

Notes:
Standalone should only be considered for development and / or demonstration purposes. A Standalone Install is not recommended for production installations because additional servers cannot be added to the installation at a later date. Furthermore, the SQL Server 2008 installed by the Standalone Installation has been constrained which make it less than ideal for most production deployments.
Server Farm if this option is chosen the installer requires a domain controller and domain based service accounts to be used for the installation. The installer will recognize the use of local accounts and prevent the installation process from continuing any further.

Note: The error message displayed above will be shown if you have selected the Server Farm option and have specified a local server account. For a server farm installation, service accounts are expected to be domain accounts.
Step 6: Click Next


Additional References:
http://blogs.msdn.com/opal/archive/2009/11/16/installation-notice-for-sharepoint-2010-public-beta.aspx
Related Posts
Sharepoint Team Announces Sharepoint 2010 System Requirements
Additional Information:
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