You won't be able to play it. The gpu would perhaps manage but combined with with that cpu it will most likely be completely uplayable.
If by some miracle it does work - you could come back and post the fps results. :-)
Will not be playable on this CPU. Also the GPU you have has some artifacts on terrain textures I heard. Time for an upgrade..? I have noticed a surge of Lenovo M58p machines in the market. If your budget is very tight get one add ATI 5570 and you will be able to play most new games at lowest/mid settings in moderate resolutions.
After a tiny bit of research, you'd be lucky to get 10FPS. Good luck still.
The Radeon HD 5450 is not considered a gaming video card. It is considered a multimedia video card.
Your Pentium 4 is considered a dinosaur in the ever changing world of technology. The vast majority of games requires at least a dual core CPU. The P4 is just a single core CPU.