There's quite a few other services you can safely disable too which are probably eating more of your RAM. You may want to check out the following link as it has been very helpful to me:
http://www.speedyvista.com/services.html
Also, if you have third party indexing programs installed, you may want to think about disabling them or changing their settings as they can eat a huge amount of resouces.
Hope that helps
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ASUS P5K-E WiFi | Intel Core 2 Duo E6600 Conroe 2.4GHz (OC 3.60GHz) | 2GB Corsair DDR2 XMS2-6400C4 RAM (4-4-4-12) | PowerColor ATI Radeon HD 3850 Pro Xtreme 512MB GDDR3 GPU | 1xMaxtor DiamondMax 22 500GB & 4xMaxtor DiamondMax 21 250GB SATA HDDs | Zalman CNPS9500 Heatsink + 6 LED Case Fans | Corsair HX620W Modular PSU | Enermax Black Knight (CS-527) Case | Pioneer DVR-216 SATA 20x20 DVD±RW
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