Hi backonthecase
Just set up my compressor/Airbrush and got my Adjustable Regulator/moisture trap from the local car paint supplier but it is made by Sealey tools
http://www.toolsbypost.com/category.php?id=734
As for pressures that depends on paint type how thick/thin it is but start at about 15psi and practise and more practise and even more practise
hope thats of some use