that's cool, but samhain isn't until october 31. what do you need exactly? a basic samhain ritual is cast the circle, greet everyone, meditate, take water and pout some salt into it [say something like water for purity, salt for earth, bless us for the time] put a cross on your forhead [for the four directions] and a pentagram over your heart and pass it along. take the wine [or juice or whatever] poor it into the chalace [say something if you want] take a sip pass it around, take the cake [bread, what-have-you] say something and pass it around. leave some wine and cake for the offering. since it's samhain, nows the time to speak with spirits and do psychic/supernatural related spells. you can dance, and sing, and if you want tell the story of samhain [differns on believe, it's the day when the veil between spirit world and ours is at it's thinnest, but it's also, some believe, when the horned god dies and rules over the afterlife, and the goddess mourns him until Yule] the alter should be decorated in orange, gold/yellow and black. pumpkins, squash, root vegetables, and the like should be decorating the alter.
if you mean Beltane [because it's tomorrow] it's a spring and fertility holiday. think spring, flowers, bright colours, you probably can't errect a maypole, but dancing around the maypole is traditional. there's an old custome where couples wanting to concieve jump over the cauldron together. berries are typically eaten, fruit, sweet things really. my friends usually drink strawberry milk instead of wine, but other than that the ceremonies usually the same. just speak about how it's about prosparity [luck, wealth, business, and fertility/relationship spells work best] and whatever you believe today represents [since everyone's belief is different.] typically it's the wedding of the lord a lady. [it's also the oposite of samhain] here's a good site: http://herbalmusings.com/beltane.htm