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Parts List

Part NumberDescriptionVendorPrice
ATmega162Atmel Mega AVR microprocessorDigikey$7
Hamamatsu P5587Small photo-reflector IC'sAcroname, Inc.$2.20 x 6
SN754410Quad Half H-Bridge DriverAcroname, Inc3 for $12
R77-4CM-ROLLER-33 Pack of 4cm omnidirectional wheelsAcroname, Inc.$32
LXAAD722R/C pack with 3-channel transmitter, reciever, and 2 S3003 servosTower Hobbies$70
LXH288Third Futaba S3003 ServoTower Hobbies$11
?Small sheet of 1/8" thick luciteHome Depot~$3
?6 Cell NiMH battery pack (4/5 A)Digikey$20

That covers the major parts. Of course, there were plenty of small things like connectors, PCB boards, screws, etc. But I'm sure that's more detail than you want to hear.