Losing weight

[bigchina]

i've been riding XC for about 7 months and i want to get involved in some racing. i just put together a new bike from new parts and parts left over from my '04 hard rock and i want to get it as light as i can, or at least shed most of the unnecessary pounds. i don't really know what areas are considered "heavy" from those that are fairly light. i was hoping you guys (or gals) could help point out which areas i could improve on as far as weight goes. here is my current setup:

Frame: 2003 Jamis Komodo 21"(4.0lbs)
F. Derailleur: Shimano LX (123 grams)
R. Derailleur: Shimano Deore (300 grams)
Fork: Marzocchi MZ Comp 100mm, steel steerer, elastomer/coil spring
Headset: Cane Creek ZS-2 (117 grams)
Brakes: Tektro IO mechanical disc brakes 6" rotors
Crank: Truvativ ISO Flow, alloy
Chainrings: 42t Cr-Mo x 32t heat-treated Cr-Mo x 22t heat-treated Cr-Mo
Shifter/Brake Levers: Deore Mega 9 (439 grams)
Cassette: 9 speed Shimano XT
Rims: Alex DM-20 (around 600 grams)
Tires: Specialized Enduro Sport, wire bead
Handlebar: Alloy, 38mm rise, 9 degree sweep
Stem: Specialized Mobius, alloy, 10 degree rise
F. Hub: Joy-Tech, double sealed loose ball w/ alloy QR
R. Hub: Joy-Tech, freehub, double sealed loose ball w/ alloy QR
Saddle: Specialized Body Geometry Sport ATB

 

[bigchina]

sorry, i already posted this in both forums because i didnt know which one it would fit it. mods, if you want, delete this one, if its no big deal, then leave it. thanks.