By the way.. Windows Vista is mentioned in their min. sys requirements.. so it should be supported correctly.. > http://na.finalfantasyxiv.com/pr/sta...iv/win/buying/

Minimum System Requirements
OS Windows® Vista 32/64bit, Windows® 7 32/64 bit, Windows® 8 32/64 bit
CPU Intel® Core™2 Duo
Memory 2GB (4GB recommended for 64bit OS)
Available space on hard disk/SSD 20GB
Graphics Card NVIDIA® Geforce® 8800 or higher, ATI Radeon™ HD 4770 or higher
Screen Resolution 1280x720
Internet Persistent broadband internet connection required
Sound Card DirectSound® compatible sound card (DirectX® 9.0c or higher)
DirectX® DirectX® 9.0c or higher