The touchscreen panel sits on top of the lcd panel. I changed my touchscreen in my Lilliput a few times and the process does not require any special tools. The TS panel was held to the LCD panel with small pieces of tape, so it would not move around. Also the TS panel had some small pieces of thick double sided tape stuck on the side that came in contact with the plastic casing. This is there to make some clearance between the plastic casing and the TS panel so the TS panel does not get pressed when you tighten the screws of the casing.
If your new panel does not have this tape already installed then maybe it is a good idea to get some and install in beforehand.
Be careful of the ribbon cables in the screen and be sure to take your time and you can't go wrong.