So, can anyone confirm? Does game really require at least Windows 7 64-bit and quad core CPU?

I'm asking because "Dinosaur Hunter" had "little" exaggerated requirements - I could play it on my notebook
(Amilo Pi 3540 with C2D T5800 @ 2.0GHz, 3GB RAM and GF9300m gs with 256 of dedicated VRAM, running Vista Home Premium 32-bit SP2) with only bloom and AA disabled.

And another thing, judging by the screenshots, "Seeds of Evil" doesn't seem to improve much over CD version (which I happen to own, 2 copies, because SoE was bundled with computer games magazines at least twice in my country :D) - does it make sense to buy it if I already own CD version (and risking to waste 9,99€ in case it won't run on my notebook)? I don't really care about the N64 soundtrack or "improved" levels (what kind of improvements? I read somewhere that levels were edited to make keys and stuff easier to find...).

The improvements are actually very nice. The added graphic options lika sao are really tough so don't expect to turn those on with those specs.

Oh and don't forget about the return policy. I think that means you could try it and within 14 days get your money back. Unless you spent a lot if time playing it successfully of course.