Homebrew PCBs

>
>When there are two copperlines with a very small distance then is 
>between this lines a small copperline that can become loose and can 
>make a short circuit . Does some knows a programm that automaticly 
>combine two lines ?

If so, after doing the design in C1 or C2, switch to O (outline) and 
draw  false outlines between the initial C1 or C2 tracks.
Use only the O output further.
Cristian