The general Rules of Cable connection:

NIC to NIC - Crossover Cable (Computer directly to second computer)
NIC to Hub/Switch - Straight Cable (Computer to Hub/Switch)
NIC to Uplink - Crossover Cable (Computer to Uplink on a HUB/Switch)

Hub/Switch (regular) to Hub/Switch (regular) - Crossover Cable
Hub/Switch (regular) to Hub/Switch Uplink - Straight Cable
Hub/Switch Uplink to Hub/Switch Uplink - Crossover Cable