hey DaGuv...
i'm running Adobe Premiere Pro cs5 with the following spec.... it handles full HD footage and previews everything including effects and transitions etc absolutely fine.
Processor (CPU) - AMD PHENOM II X6 1090T (3.20GHz/9MB CACHE/AM3/)
Motherboard - ASUS® M4N98TD EVO: DDR3, 2-Way SLI, SATA 3.0GB/s
Memory (RAM) - 8GB SAMSUNG DDR3 DUAL-DDR3 1333MHz (2 X 4GB)
Graphics Card - 1GB NVIDIA GEFORCE GTX460 PCI EXPRESS - DirectX® 11, 3D Vision Ready
Memory - 1st Hard Disk - 1TB WD CAVIAR GREEN WD10EARS, SATA 3 Gb/s, 64MB CACHE
1st Hard Disk Partitions 100GB, 400GB, 500GB
2nd Hard Disk 1TB WD CAVIAR GREEN WD10EARS, SATA 3 Gb/s, 64MB CACHE
1st DVD/BLU-RAY Drive - 24x DUAL LAYER DVD WRITER ±R/±RW/RAM
Power Supply - 600W Quiet 80 PLUS Quad Rail PSU + 120mm Case Fan
Processor Cooling - SUPER QUIET 22dBA TRIPLE COPPER HEATPIPE CPU COOLER
Sound Card - ONBOARD 8 CHANNEL (7.1) HIGH DEF AUDIO
Operating System - Genuine Windows 7 Home Premium 64 Bit
hope that helps in some way