[support] room booking

Hi, I'm in desperate need of booking functionality for the website I'm building. They need to be able to book rooms and offices on a pr. hour basis, and I haven't found a module that does this. There's the fairly new open resort booking module, but it doesn't work with hours only whole days and its probably overkill anyway for the few features I need. Does anyone know how I could build a simple booking page with existing modules - I was thinking a combination of events/calendar/cck perhaps? I have tried but haven't really any success. thanks Morten