What parts and peices do I need to make a pandora bracelet?

I don’t want to get one made from an expensive place so I just want to buy parts and beads on ebay…which are way less expensive that other stores. But what do I need? I read something about a screw on bead and stopper beads…what do I need?
How many beads do I need to fill up a seven inch chain?

pls check here, they sell cheap pandora style beads:

http://www.artfire.com/modules.php?name=Shop&sc_id=27720&seller_id=28170&op=new

	Murano Pandora Screw Core Bead $5.95

	Sterling Silver Charm Bracelet For Pandora or Biagi Beads 9.5 Inch Screw End Lobster Clasp $8.75 Sterling Silver Charm Bracelet For Pandora or Biagi Beads 9 Inch Screw End Lobster Clasp. This bracelet features an easy to use screw end clasp that makes it easier to add your favorite beads….

	.925 Sterling Silver Camping Lantern w/ Screw Core Bead Compatible with Pandora Chamilia Kay Troll Bracelet $22.95 …

	Sterling Silver Charm Bracelet For Pandora or Biagi Beads 7.5 Inch Screw End Lobster Clasp $17.99 Sterling Silver Charm Bracelet For Pandora or Biagi Beads 7.5 Inch Screw End Lobster Clasp. This bracelet features an easy to use screw end clasp that makes it easier to add your favorite beads….

	3mm Sterling Silver Snake Chain Bracelet Barrel Clasp Screw Tip Compatible Pandora Bead 7in Measure: 7inches length x 3mm width Weight: 12.7 grams Material: .925 Sterling Silver Category: 925 Sterling Silver Snake Chain Bracelet 7 Barrel Clasp silver charm bead bracelet HC-035-19CM-SHINE…