1 simple Google Gadget Ad needed

I need an very basic google gadget ad this is a very simple job to someone that knows Google's guidelines for creating gadget ads and/or has a little experience with their easy to use ad builder (GGAE - avilable here [login to view URL] ) I would like: A simple calculator gadget that will contain two drop-down boxes. the ad will then grab a number from a simple matrix (which will be supplied) & display the resulting amount eg | matrix | 5 | 15 | 25 | | 50 | a | c | e | | 100 | q | w | r | so if a user chooses 15 & 100 from the 2 drop down fields - the result of 'w' will be displayed within the ad (ideally I'd like those two values to be chosen with a slider bar, rather than a drop down box - but we can discuss this as a secondary project for more money once the ad is complete) Thanks in advance for your time and consideration mike