If you are running Subversion under Linux (Ubuntu) and need to configure a (SSL) web-based repository access via Apache2, Viktor Zigo has a particularly good writeup on his blog at Installation of Subversion on Ubuntu, with Apache, SSL, and BasicAuth.
Configuring Subversion & Apache for Web-Based Repository Access
by community-syndication | Mar 4, 2008 | BizTalk Community Blogs via Syndication