I just can't see if mine is worse (I suspect so) or better than what they are asking.. if anyone understands this stuff I'd appreciate your opinion please!
TOSHIBA Satellite C850D-107 Part number: PSC9SE-00T00DEN Windows® 7 Home Premium 64-bit (pre-installed, Toshiba-HDD recovery) AMD Dual-Core E1-1200 APU 39.6cm (15.6”) , Toshiba TruBrite® HD TFT High Brightness display with 16 : 9 aspect ratio and LED backlighting Hard disk 640 GB Matt Black Finish with textured pattern, black keyboard 4,096 (1x) MB, DDR3 RAM (1,066 MHz) AMD Dual-Core Processor E1-1200 APU with AMD Radeon™ HD 7310 Graphics maximum life : up to 5h30min (Mobile Mark™ 2007) weight : starting at 2.3 kg W x D x H : 380.0 x 242.0 x 33.52 mm
Minecraft reckons it needs 2GB RAM, so you could be goosed. It also says it requires a 2.6GHz processor clock, which guess is faster than yours. However, I'm pretty sure we're running it on a machine without that kind of processor although it does have 2GB of RAM and is crippled by running Windoze.
There is a demo of Minecraft (see the page you linked to), so try installing that and see what happens before spending any money.