Hi ErnieM,

On the 16F88, PortB.1 and PortB.4 are used for I2C . (Datasheet!) B1 is the data line and B.4 is the clock line. Try switching to these pins and you should work. I'm currently working on 2 projects using an I2C RTC and a 16F87 which is the same pinout as the 16F88.

BobK