Center Armrest

Has anyone installed a Front Center Armrest in an E46 325i Touring? (The one that comes with the Premium Package?)

The accessories catalog says that the installation procedure is found in DIS tester on TIS files 51 16 195 and 51 16 200. Any ideas what this procedure might be?

I just ordered one from bavauto.com for my 01 325i. It was more than $100 cheaper than the dealer and it's a factory one. The guy on the phone said I could put it in "on the way to work in the morning". It should be here in about a week or so. I'll let you know if I spilled my coffee...