The CPU is single core <and> not fast enough. in order to get something that meets the minimum, you'd need a new processor. to get to recommended (which is a alias for "playable") you would need a newer generation CPU, (a Core Duo, for example) which will not be usable in the same socket as a P4.
Next, as has been stated, you don't have nearly enough RAM to run it. Remember they are Minimums. The minimum requirement for windows XP is 64MB, for example.
Lastly, your GPU is 2 years too old. a 9250 comes in PCI and AGP variants. the X1300 is not only a newer graphics card, with a newer generation GPU as well as faster RAM, but it operates on the much faster PCI-Express bus.
so that's RAM, Graphics Card, and CPU you need to upgrade, the CPU will probably need a newer motherboard, and so would the graphics card, which means that your basically building a PC from scratch.