You can use the resources below to perform a Sri Krishna Homa by yourself. Homa or havan is a Hindu fire ritual.
Download a Sri Krishna Homa manual (version dated 2009 July 04) with mantras in Sanskrit, English, Telugu, Kannada, Tamil or Malayalam. The instructions are in English in all manuals, but mantras are written in various languages. This manual explains the details of a quick 30-minute Sri Krishna homa procedure. Several options are suggested for the main mantra of pradhaana homa. It is simple enough to perform daily or weekly or monthly.
You can download free software to view PDF files at http://www.adobe.com/products/acrobat/index.html.
Download the quick reference (cheat sheet) containing only mantras in Sanskrit, English, Telugu, Kannada, Tamil or Malayalam. These documents contain only mantras. One should first download the full manuals and learn the procedure. After one becomes comfortable, one may want to just print the quick reference and do homa using it.
Download the audio MP3 file. You can play this MP3 file and perform homa by yourself by pausing and playing. Or you can listen to it a few times and practice the pronunciation. You can click the right mouse button on the link and click "Save Target As" in the pop-up menu to save the MP3 file on your computer. The audio is about 23 minutes long.
You can use MP3 players like Media Player to play this file. You can download one such MP3 player from the site http://www.oldapps.com/MusicMatch_Jukebox.htm.