I'm making bum wine (wine made of of random juices from fruit) and I need to know if I put it in a pot and heat it on the stove will this increase the speed that it brews at or will it spoil it?
Allso should I add shugar?

you must fervent it ... like let it sit in a plastic 2 liter and open daily to let air in process takes about a week contents are majorly under pressure think of it this way wine is rotten fruit juices~

Do not boil your must, it will release tannins, and the wine will never clear.

I'm assuming you are underage by the wording of this question, but I guess I'll answer anyway...

Check out your local homebrew shop or http://www.midwestsupplies.com for yeast. Depending on the juice (must be 100% juice, no preservatives, no additives), all you need to do is pitch some wine yeast, then put an airlock on to keep the outside air out. Let this sit for a couple months and you will have wine (well, actually hooch, but it will be alcoholic).

Check out http://winemaking.jackkeller.net/ for more information and recipes.