Ok, assuming you have installed svn, make sure your environment
variable PATH includes this:
C:\Program Files\Subversion\bin
Here’s my full PATH variable value:
c:\ruby\bin;%SystemRoot%\system32;%SystemRoot%;C:\Program
Files\Subversion\bin
You can edit your PATH variable by going to My
Computer->Properties->Advanced->Environment Variables – you’ll want
to look under ‘System Variables’, there you’ll find PATH