Many people had CUPS working on the N800. We need to either find the old files and try them or re-build them for the N900 (probably better because they would be newer.) It worked great. With command line options you could print PDFs, photos, text files, etc.

Probably here is what needs to be done (if someone has time; I, sadly, don't).

1) Get C++ working on the N900 or set up scratchbox on a PC.
2) Download the cups source code.
3) Build it. (Find instructions on the CUPs web-site or in the source code)
3a) Find, download and build any dependencies.

4) Create a debian package.

If someone tries this I can offer help with build problems. Hopefully someone else will help build a deb.

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OK, I am trying this. It didn't build, but I didn't expect it too. I'll see how far I can get. I get little bursts of time. If I make any progress I'll report back soon.