I'm using a Garmin GPSmap 60CSx and constructed my own gps mount from recycling parts in aluminium with rubber, to attach the gps-unit on the bike. I also made a custom TYP-File for displaying buildings in red on the 60CSx, leaving all the other features, colours, and lines as they are in the standard config. If you want to use it, just upload the TYP-File together with the map on the unit. On the 60CSx it works fine, don't know for other garmin units because there seems to be a bug on 60CSx, that all colours tend to be blue, so I adjusted the colour using trial and error.
If you are a new mapper in Lazio, or you are not, and you need some help or hint, or simply want to contact me, feel free to send me an email at dieterdreist-at-gmail-dot-com.
Andate sulla pagina di Roma per sapere di più. C'è anche una mailing list per Roma ed il Lazio: http://lists.openstreetmap.org/listinfo/talk-it-lazio
I was back to Berlin for some time and have been to the local meetings Berlin Brandenburger Stammtisch.