I doubt I can help much from here. If I were looking for something like that, I'd go to a local place called "The Trailing Edge", which specializes in older computers and refurbs. I'm attaching the website link anyway just in case you can find something you can use. Depending on costs and shipping, you might be able to afford a laptop for close to that. If you could find another $100, there's a nice laptop on the main page for $300 CAD which might have what you need. It ships with Win7, so you might even be able to afford it if you bought it without an OS. Check it out.
http://www.tte.ca/
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Those who fear the darkness have never seen what the light can do.
http://www.tte.ca/
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Those who fear the darkness have never seen what the light can do.