Homebrew PCBs

So, if I put nets together with my components, and then switch to
layout editor, isn't the program supposed to logically come up with a
layout?
In my schematic, I connected the components together using these
"buses" and then some pop up error came up and said that they need to
be connected using nets.  So I put the nets on top of the busses, is
this right?  Or do I only need nets OR busses?
Thanks,
Tei
--- In Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> a net in eagle is a number of pins that are electically connected 
> together - kind of the way you would logically think of it.  It has a 
> name.  You dont have to actually draw them as connected.  Any nets 
> you name Gnd, for example, will be connected together.   This is 
> great for doing a schematic with out making a wiring mess in the 
> drawing.  I use it all the time.  
> 
> A bus is a set of parallel nets with a common name, say "Bus", and 
> each net has a sub name - Bus1, Bus2, Bus3...  Its used mainly for, 
> shock!, creating busses and keeping them tidy on the schematic.
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" 
> <leon_heller@h...> wrote:
> > ----- Original Message ----- 
> > From: "teilhardo" <teilhardo@y...>
> > To: <Homebrew_PCBs@yahoogroups.com>
> > Sent: Sunday, May 16, 2004 9:38 PM
> > Subject: [Homebrew_PCBs] Re: New to group and first attempt at PCB
> > 
> > 
> > > Eagle has some nice ULP's but it is sort of awkward.  Does anyone 
> know
> > > the difference between a "bus" and a "net"?  
> > 
> > With the Pulsonix software I use, a bus contains several nets.
> > 
> > Leon
> > --
> > Leon Heller, G1HSM
> > http://www.geocities.com/leon_heller