buy the best compressor you can afford - wire your garage for 220 - a 30 amp breaker, a little romex and a 3 prong electric dryer outlet / chord - isn't to tricky...
I have this one and it works fine for hvlp
- great deal when you can get them as blems (like the link below) - and it was only $7 for delivered to your door (that was the deal when i bought mine, anyways)...
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=55222] for hvlp you need High Volume, Low Pressure - that means it needs to push MORE air - a small 110 volt compressor will not keep up - the setup above with wiring is going to cost you about $400, but you will be very happy with the addition...