arrhythmia, I so pleased its helped you!
I don't know what kind the lightbulbs are, I thought they were just energy saving! I've had a look on them and it doesn't say either. The box is approx 45cm high x 50cm wide x 30cm deep, but I think you could use a slightly smaller or bigger one as long as it fits the tray that you're using - the bulbs we have are long so it needs to be that high.
If you come across any problems just let me know!
OH!! My husband was taking some photos using the box last night with his super duper new camera and they all came out with a very slight pink tinge - we worked out it was because he was wearing a red t-shirt that must have reflected (it was only in a certain area of the shot). This hasn't happened before and it must have been 'cos his camera is so good, but there is a way to get rid of it if it happens! Go to the "colour levels" box and use the "value" drop down menu next to adjust individual colour levels and you need to play about with the opposite colour from what you need to change and it will bring your picture back to being white. OR maybe just wear white clothes when doing it