You should be aware of the rather severe security implications of "xhost +" though. There are more secure ways to achieve that but they are also inevitably more complex.

It would also help if we knew where you are connecting from, where you are connecting to, and how (and perhaps why. Like maybe "from work desktop computer running SuSE to wife's laptop at home running Ubuntu, using ssh; need to run OpenOffice there to print out some documents of hers on the printer at home" or some similar broad problem description).