Well not a lot more than the motherboard on your list. Having said that, your choices seem to be all over the place, if you don't mind me saying. Your processor is an Intel Celeron and you're planning on trying to make it work with an Athlon 64 motherboard. All I can say is good luck.
My point is, I can pick you out a good board with 4 memory slots, but working out what hardware will go with it is your first step, otherwise compatability will just not be there.
If you are so unsure about pc hardware, are you sure it will be wise trying to build an entire pc?