Renegade,
No sweat, the only hassles on that route can be weather.
First, I would NOT on wheels, take the coastal route. Weather is VERY iffy, and, while you might get through, you're apt to be really low over a LOT of very cold water. I would NEVER recommend flying the coastal route on wheels. There are only a few places to land out there.
Second, you have to be on a Defense Flight plan (ADCUS) flight plan, entering Canada, and again entering the US. ADCUS means advise Customs, but the irony is that you still have to call Customs ahead of time, and let them know you're coming, and where you're going to land AT LEAST an hour ahead of time, but no more than 23 hours.
NO HANDGUNS in Canada, so don't even think about it. Long guns have to be at least 18 inch (I believe) barrel length. Guns are about the only thing that will get Canada Customs' underwear in a knot.
Pets have to have a health certificate from a vet that's within 2 weeks of entry into Canada, I believe.
Going into Canada, the canpass system works fine. Half the time, they never even come out to inspect you. You taxi up, per tower instructions to a phone booth, pick up a phone, and voila, they give you a travel number. Write it down.
Going into the US (and Northway would be my choice) STAY in the plane till you're told to get out. US Customs are a little more "Tight" than their Canadian counterparts.
From Texas, I'd head up through the mid part of the country, direct to Great Falls, MT. Holman Aviation are great folks there. From there, Calgary, Red Deer, etc. Then up to Ft St. John, Ft. Nelson. From Fort Nelson, the next stop is Watson Lake. There isn't much between, and it's 200 miles. There is a little wayside on the Alaska Highway called Toad RIver, BC, with an airstrip, hotel, cafe. Nice folks. Strip is noted as private on charts, but if you buy a cup of coffee, its' all yours.
Watson Lake to Whitehorse. Whitehorse has a pilot "hostel" right in the main building-cheap and generally not full. Whitehorse, follow the Alaska Highway to Northway, to clear US Customs. There's fuel at ORT and a restaurant as well. Friendly place.
You will be required to file flight plans while in Canada. There are a few different flight rules in Canada as well, but flight plans are the biggy.
After you return home, you'll get a bill from Nav Canada, for $26 or something for services, as in flight plans, weather briefings, etc.
AOPA has a members area link to flying to Alaska as well, with phone numbers, etc.
You have to have evidence of liability insurance in Canda as well, though I've never been asked to see it.
Now, once you're in Alaska, that's another story.
MTV