multiboxing and system requirements

Since Eve Online won't let me run multiple trial accounts at the same time I have to resort to asking those who have run multiple accounts if my setup is doable. I run Linux and Wine and want to use a group of 4 miners since that's the only thing I could easily command them sequentially doing. Here are my system specs:
Q6700 2.66Ghz quad core processor
6 Gb RAM
NVidia GeForce 9500GS graphics card

Also is it legal and possible to resize the windows to fit on the screen at the same time like with WoW?

You should have no problem with 4. I have a weaker cpu, 4 gigs of ram and a GeForce 8800 and can run 4 with no problem (and 5 with slight stuttering). I believe Linux is supposed to run Eve a little slower, but I don't think the difference is substantial and your computer outclasses mine enough that I'm 99% sure you'll have no problem.

I believe you can resize the window with EveLauncher though that requires different installs for EVE for each account. I don't know of any way that re-sizing the window would break the EULA but CCP is hard to pin down on a lot of things.