Apple Remote Compatibility

Hello,

I have a question about Apple remotes...

Are they only compatible with Macs that have an infrared port? Is there anywhere I can view which Macs I can use one with?

Specifically, I could do with knowing which (if any) of these will support an apple remote-

iMac G4 1250Mhz
iMac G5 1800Mhz
iMac Core Duo 1830Mhz
iMac Core 2 Duo 2000Mhz
iMac Aluminium Core 2 Duo 2400Mhz
PoweMac G5 2000Mhz
MacPro Quad Dual Core 2660Mhz
MacPro Eight Core Quad Core 3200Mhz
ibook G4 G4 1200Mhz
Powerbook G4 1500Mhz
Macbook Core2Duo 2000Mhz
Macbook Unibody Core2Duo 2400Mhz
Macbook Pro Core Duo 2160Mhz
Macbook Pro Core2Duo 2530Mhz

Sorry, I know its a long list with not much detail!

Any help would be appreciated.

Cheers

Let me goog ....... dont worry have a read of this Wiki page Wiki - Apple Remote

Ah, thank you.

I've already checked the wikipedia page and somehow didn't notice the paragraph I needed

Question answered, thanks.