Well, here is a preview of "RPG DiceRoller". I still have to work on the user interface.
You want to play a D4 ?
[dice=1]4[/dice]
You want to play a D6 ?
[dice=1]6[/dice]
You want to play a D8 ?
[dice=1]8[/dice]
You want to play a D10 ?
[dice=1]10[/dice]
You want to play a D12 ?
[dice=1]12[/dice]
You want to play a D20 ?
[dice=1]20[/dice]
Other dices won't work because pictures don't exist
N.B : Pictures are in png format. To avoid grey line arround them in Internet Explorer 6, you need a png transparency hack (available here). Otherwise i could do a gif release.