Homebrew PCBs

Does anyone have idea about how to attach an AC line to a PCB board?  
I have a transformer that is actually on the board itself.  Is this a 
good/bad idea?  Do I basically drill a whole and stick the wire 
through the hole and solder it one?  I can't seem to find any 
connector type stuff on digikey.  Also, I plan to have a floating 
ground on the other side of the transformer...i.e. electrical 
isolation.  Should any grounded part of the board be connected to the 
netural line on the AC?  Should there is some kind of connection such 
as through a transient supressor?  Any help is appreciated. Also, 
should there be any type of noise supression on the AC side of the 
board?  What about grounding planes on the AC side?  Thanks!