Setting Timers on the PIC16F688?

[Tom-H-PIC]

Ok I must be missing it or this PIC will not do what I think it will.
I'm working with a PIC16F688. I read the data sheet about a 100 times and tested code about the same amount. Not seeing how to make this work
I'm trying to get one of the timers to run from the 31khz oscillator.
I'm using the internal oscillator at 8Mhz for the main oscillator.
What I trying to do is operate the PIC from the main oscillator at 8Mhz and have one of the timers give a 1ms interrupt with the other timer running from the 31khz as a RTC with a 1 sec. interrupt.
If this will work some pointers on setting the configuration registers would be outstanding.
Thanks all
Tom

[PCM programmer]

Look at the block diagram in the data sheet.

[Tom-H-PIC]

Thanks for the reply!
That is the conclusion that I came to.
I was getting hung-up on section 6.2.2 of the data sheet and the statement the "Timer 1 can use the LP oscillator"
Tom

[Ttelmah]

That is for it's own LP oscillator on the external pins. Register 6-1, bit3.
The internal 31KHz oscillator, would not really be accurate enough for any form of timekeeping anyway....

Best Wishes