Looking for svnserve , I realized that the link is dead. Instead I found some hints that subversion from version 1.4 .x on supports to be started as a service out of the box. After running

sc create svn.local binpath= ""c:\program files\subversion\bin\svnserve.exe" --service --root c:svn" displayname= "Subversion Repository" depend= Tcpip

I just had to change the service settings to be automatically started.

More information on this topic can be found here.