That kit works fine on my system but I have a gig o' ram. On my older computer I have a half gig and it works pretty well. Not sure how it would respond to 375mb. However, I can tell you that this pic was made with the 3dworldz kit by Andix and it is fantastic, although not as versatile as 3D Worlds. This pic uses several elements from the basic 3dWorldz and the newer expansion pack plus several props and the 3dModelz Foreground Tool. What makes this great? The file size of the pz3 is a mere 714kb! So if you're worried about system resources, the Andix stuff may be a better bet.