Thanks for your replies guys !

I could'nt get back to you any sooner, cause the forum was offline.

The reason i would like to use the 519 is because it's the cheapest and smallest
pic micro that has memory on it. I did some projects on the 12F635, and that works
like a charm, however, it's more expensive and isn't available in a MSOP package ...

OK, so read and write is not going to work then ?

Is there anyway i can make this work Darrel or Skimask ?

The project is very small step up dimmer for small led lights. It uses a i2c digital potentiometer to influence a sense resistor. Each time the pic get Vdd it reads the previous value and adds 1 to it and applies the setting to the digital pot. So, by switching the lights on and off a few times the dimmer state can be influenced ...