You can try FontForge: it is free and very powerful. I know very few about Mac, but, AFAIK, it works well under Mac OS X (you must have the X11 server installed in order to run FontForge).

Fontforge works very well indeed with X11 on OS X and it can import .svg files. I however needed some knowledge of Unix to have it run (so that paths are properly exported).

I've got fontforge running, but cannot import anything really. 've tried saving the symbols as SVGs but when I try to import, fontforge says: "I'm sorry thhis file is too complex for me to understand (or is erroneus)".

Are there tutorials or something?

With just 9 icons, I guess you can import them individually. Save each one in a .svg file. Then in Fontforge, you select the slot where you want to put the icon, open it (say double click) and then in File > Import you select "SVG" instead of "Image" and then click the file you want to import.

[edit] On the fontforge site there is a pdf tutorial (second bullet).

You can also try saving your images as EPS rather than SVG. But of course I don't know what your images look like: it might be possible that they are indeed more complex than any font editing software can understand.

If nothing else helps, you can subscribe to the fontforge-users mailing list and ask about your problem there.