Yeah, 4WD is better in the snow. You can learn techniques to improve 2WD capabilities, but for the same learning curve, you'd still get farther with 4WD, and so forth.
A 2WD truck is really just a minivan with a less efficient form factor.
The best fix is to sell the minivan that looks like a truck, and buy a truck (4WD X).
BTW - Some snow tires work better than others - the Bridgestone Blizzak for example is a LOT better in snow than most other DEDICATED SNOW TIRES.
A point to consider with tires: The depth of the snow, and how hard packed it is, makes an enormous difference in what tires will work best in it.
For example, the deeper and softer the snow the better a large deep cleat-like tread works, as it can sink a tread block into the snow, and paddle wheel you along.
If the snow is hard packed, so that cleat-like tread block can't sink down into it for grip, you skitter along the top like a girl in high heels on ice.
The harder packed the snow gets, the smaller the blocks have to be to get enough ground pressure to sink in for traction...and, by the time its like ice, nothing penetrates it. At that point, micro-textured tread patterns (Lots of sipes and surface texture, even on the microscopic level) are all that can still get any grip.
So, depending on what KIND of snow you have to get through, some tires will simply be a better choice than others.
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- TJ
2001 Xterra '03 VG33, SE 5 spd, 305/70/16's, Revolvers, UBSkidderz, Doubled AAL's, 3"SL/2"BL, winch/bumpers, skids, sliders, OBA, Snorkel, pine stripes....
Friends don't let friends drive stock.
http://www.gifsoup.com/view/501230/tj-tackling-crawlers-ridge-o.gif