On the map page you will have something like this http://www.openstreetmap.org/#map=9/-38.3266/144.8781
just edit the latitude and longitude. andt he and the map can jump to the new location. location.
note negative is used for west and south and positive for north and east. If you wish convert Degrees Minutes and seconds to decimal degrees then you can use this site http://transition.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html (note link not working now) minutes are 1/60 of a degree and seconds are 1/60 of a minute.... you'll need to do the maths. So 52 : 25 : 46 would become 52 + 25/60 + 46/3600 decimal degrees for example.
