OK,
Here we go,
1.Turn Camera on
2. Press menu
3. Scroll down to set-up menu
4. Scroll right and scroll down to Non CPU lens data
5. Scroll right, then down
6. Enter Lens number
7. Enter focal length
8. Enter Maximum aperture
9. Scroll back up to "Done" and press OK

Lastly,
Your camera will not adjust for Zoom, so unfortunately you will have to pick some other focal lengths to choose from when zooming, I would start with every 100mm and do some testing

There are other options such as programing the Fn button and adding to "My menu" but some more reading of the manual is the go,
Have fun,
Regards,
Gary
PS: Have sent you a PM, which I guess you can ignore now as I am off fly fishing for a week, I am not totally sure how you go about this without missing a few mm but would suggest every 100mm to start with and try it out, that would mean, if zoom to 200mm for example, you would have to adjust the non-CPU data to suit, rather laborious I guess

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