slipperysam

As above I have had a 1998 R reg 2.0i petrol Galaxy for the last 10 years and I have to say it has been a brilliant work horse. Recently the temperature gauge hardly moves off cold and the air from the vents takes an age to get mildly warm. I assume the thermostat is stuck open so will have a go at replacing it tomorrow. My question is.. where is the thermostat on this model and how easy is it to change? Thanks in advance. Sam.