Are these specs ok for Battlefield 2?

Your CPU and memory are adequate, (1Gb+ would be ideal, though) but that video card is going to give you trouble. The official requirements specify GeForce 5-series or Radon 9500 as the minimum GPU, and those are often severely lowballed. (ie, if you have the official minimums it plays like a slideshow on minimum settings) As it stands now the game will likely fail to load. You need a video card upgrade. Fortunately for you, those are not too expensive right now, especially for older AGP systems like yours.