Two wires are enough for DSL (in the small RJ-11 telephone plug this is a middle pair)
Do you already have DSL on your 1st or 2nd line and you just need additional phone jack?
What kind of DSL - do you know if you need a splitter or two?
I'm assuming you have a bridged 66 punch block.
If DSL is on your 1st line:
If you don't need splitters (or you already installed them), you want to trace where the wires are coming from the top feed (blue and white/blue wire, with letters FE).
Since I can't tell (the wires are behind the tabs), let's assume that it winds down to MA (in "MASTER").
The easiest would be to buy a pair or bridging clips (you can use temporary use tinfoil for the test if you you don't have bridging clips handy) and bridge two rows in the middle.
Than connect blue and blue/white wires from your new outlet to the right punches at the same level (so they will end up two levels below N (in KITCHEN).
Inside the outlet connect the two wires to "the most middle" pair.
Here is a link which shows the bridging clips in action:
http://www.swhowto.com/CWP_Ch2.htm
if I'm not clear, please let me know,
sailor