I am not so sure that you have research much...... I wanna see that T-shirt :wink: ..... There is plenty of info about that on the web. Google returns all you need in a search for "LCD PIC routine asm"
Not to mention Microchip pages show some **broken link removed**.
Some points to looks for:
* Know how the LCD works
* How to send commands
* How to send characters
* ASCII table