Hi Keith (Keith Doxey), in <01BD75BA.67A9F3C0@host5-99-62-227.btinternet.com> on May 2 you wrote:

> Does any one know of any RJ45 jacks that have pins spaced so that they can
> be inserted into a breadboard? All the ones I have seen have pins spaced .1"
> per row, but there are always two rows and they are offset so that the jack
> cannot be inserted into a breadboard.

What's the problem?  I hold the jack in a way that only the outer row pins
touch their holes.  Then I push the jack to the side.  The inserted pins
(1st row) bend, until the second row fits, too.  Firmly inserted, the jack
sits just fine (for prototypes) and is ready to solder.

Just use your imagination.  I sometimes use SMT on breadboard, too.