Windows 7affecting Il-2 performance

[The Cheese]

For several years now, whenever I'm not at my desktop, I've been playing Il-2 on my laptop, running Windows XP. My computer has a 1.7 ghz processor, 1.2 gb of RAM, and a 32gb graphics card. It could generally run Il-2 on almost full graphics, except for landscape, which was excellent instead of perfect. Recently I installed Windows 7, and now while I haven't had problems starting the game like other people have, the game runs horrendously slowly, even just in the menus, like at 1 fps. This is running on OpenGL, and the game doesn't even run when using Direct X. I was wondering if there is any remedy for this problem, or if my computer simply can't do it with these specifications.