Hi,
It's easy but I'm afraid it's not THAT easy - there is no TMR1 register (hence the error). Instead TMR1 consists of TWO 8bit regsiters, TMR1L and TMR1H.

The straight forward way to write it is to do
Code:
TMR1L = 0
TMR1H = 0
And the straight forward way to read it is
Code:
myVar VAR WORD
myVAR.HighByte = TMR1H
myVAR.LowByte = TMR1L
When reading TMR1 this way there's a slight posibillity that TMR1L overflows right in between reading TMR1H and TMR1L giving you a wrong result. To prevent that the easiest way is to simply STOP the timer before reading it. If that's not possible there are other ways to cater for that - and there are tricks that allows you to read it in one go if needed but lets keep it as simple as possible for now.

/Henrik.