Roof lining replacement and DVD install

[Biaspot]

Hi All, I have a 2005 2.5t and due to it being kept outside most of it's life the roof ling is sagging and needs to be replaced as it heads the top of my head now and feels strange! I have removed one from and 850 T5 I owned and then had it professionally redone which saved a few dollars. However, there was a DIY write up on one of the forums that helped me a lot, but I can't find anything on doing the same job for the XC90. Has anyone done this job themselves? or can point me in the direction of a write up on the procedure? While I'm doing this job I have had a Volvo factory DVD player and drop down screen sitting in the shed for years and haven't been able to install it. Everything is there except the patterns for where I need to cut the roof lining to install them. Can anyone help me out with some photos and or measurements from there own vehicle for the both the DVD player and the screen placement. I haven't been able to find one at a wrecking yard that has had one installed to copy, maybe they weren't that popular but it's better installed then sitting in the shed.
Any assistance would be greatly appreciated.