You can use the Arduino library as a reference for building a python class that talks to the LCD. The existing code will show you all the SPI commands necessary to make the thing work.
As an alternative, this thread on the Raspberry Pi forums: http://www.raspberrypi.org/phpBB3/viewt ... 4&p=264142
has existing python code that does talk to the 5110.
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.