I would suggest that you send a CV of your team to the store or manufacturer you would like to sponsor you.
The CV should include a resume and photo of each player, your achievements to date and your goals for the future.
I would suggest you approach one of the following:-
1. Eclipse;
2. DYE;
3. Angel Paintball Sports.
Please do not approach all 3 - this looks like you are playing them off against each other. Paintball is a small community and word gets around quick.
Please note that there is a subtle distinction between "support" and "sponsorship".
"Support" means you get a discount on gear; "Sponsorship" means you are given it.
Many people confuse the two.
If you have a unique selling point for your team - for example, if you are an all-girl team - that will make you more attractive.
Be advised that it is a little late to be approaching companies in relation to the 2010 season, but good luck anyway.