Here's some news to cheer your new year. ANSI is selling ISO 17799:2005 as a PDF download for just US$30. Bargain! The normal price elsewhere is at least $100 more so either they are having a January clearance sale prior to its imminent re-badging as ISO 27002 or someone made a typo on the pricing page (an integrity failure!).
A PDF of ISO 27001:2005 is also just $30.
The license permits installation and use of the PDFs on a single PC but I believe site licenses are also available.
More info on ISO 27001 and ISO 17799/27002