Merepatra is probably the best source for release date in Australia.
The minimum requirements vary, depending on which site you choose to use.
From Civ3.com:
http://civ3.com/conq_faq.cfm#faqs4
What are the system requirements for the game?
Civilization III Conquests system requirements are as follows:
Windows® version (98/2000/XP)
Pentium II, 550Mhz
128 MB RAM
650 MB free HDD space (Plus 600MB HDD space used by CivIII)
4X CD-ROM
DirectX 9.0b or better
Video card: capable of 1024 x 768 x 16-bit color
Sound card: DirectX 9.0b compatible
From amazon.com:
http://www.amazon.com/exec/obidos/t...ames/B00009THFF/tech-data/104-9565819-5712757
System requirements
Windows 95/98/Me/2000
Pentium II 300MHz processor
32 MB RAM
DirectX 8.0a-compatible video card (must be able to display 1024x768x16 bit)
400 MB free hard drive space
4X CD-ROM
DirectX 8.0a-compatible sound card
From Infogrames/Atari:
http://us.infogrames.com/games/civ3_conquests_strategy_pc/
Operating System: Windows® 98/Me/2000/XP
Processor: Pentium® II 400 MHz
Memory: 128 MB RAM
Hard Disk Space: 800 MB free (in addition to the 600 MB required by Civilization III)
CD-ROM Drive: 4X speed or Faster
Video: Windows® 98/Me/2000/XP-compatible video card*
Sound: Windows® 98/Me/2000/XP-compatible sound card*
DirectX®: DirectX® version 9.0b (included) or higher
Multiplayer: LAN or Internet connection required for some multiplayer modes Broadband Recommended for 5 or more players
Microphone: Required for voice chat
*Indicates device should be compatible with DirectX® version 9.0b or higher.
Usually expansion packs are cheaper than full games.