Participation in open source project is not only open to folks who can program in C. If you can read English, and can write in some other language, your participation is desperately needed.
The complete documentation for the Apache HTTP Server is currently only available in English. Parts of it are available in other languages, with German, French, and Japanese being the most complete. However, some modules are not available in other languages at all, while many are partially translated, and most are not translated at all.
If you are able to translate into any language, please let us know. Join the email@example.com mailing list (send a note to firstname.lastname@example.org) and join the conversation there. You don’t need to know how to program in C, and you don’t even need to know how to use svn, or write HTML or XML, although these things are helpful, and if you participate for very long, you’re sure to learn.
Participation in Open Source projects looks great on your resume, and helps make the world a better place, and it can be a lot of fun. Please consider using your language skills to benefit the Apache HTTP Server project.