upgrade visual studio to sp1

i'm going to install sql server 2008 on my computer,during preparing the installation there was an error like this:

a previous release of Microsoft Visual Studio 2008 is installed on this computer. Upgrade Microsoft visual studio 2008 to sp1 before installing SQL Server 2008.

So i should upgrade my visual st开发者_运维技巧udio to sp1, but i don't know how to do it.

Please help, and Thanks.

Download the installer for SP1 and run it.

It is on this page.

Easier Method

There is a registry trick to overcome this error

Go to

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DevDiv\VS\Servicing\9.0

rename 9.0 to 9.0old

then click “re run” ,it will solve the problem,but better to install visual studio 2008 SP1

Source: http://computech.in/2010/08/a-previous-release-of-microsoft-visual-studio-2008-is-installed-on-this-computer-upgrade-microsoft-visual-studio-2008-to-the-sp1-before-installing-sql-server-2008sql-server-2008-installation-failed/