Look at your records for what the final disposition of your charge was-- if it is a first offense, there is a 99.99% chance that it wasn't a "conviction" per se, but some other kind of disposition that leaves you without a criminal record. Heck, you might still be eligible for NEXUS if you weren't convicted.

Look for words like "supervision" or "conditional discharge" or something like that. It really doesn't sound like a bona fide conviction. I doubt you have a criminal record.


Question 2:

It varies by province, but the basic idea is that above 0.08% is a crime and above 0.05% is treated in a wierd way where it is a "warn zone" and I believe some provinces will give you a 72-hour roadside suspension, others 12 hour, others nothing, though they all may have adopted something now (perhaps if MADD Canada spent its money on lobbying and not advertising, the laws would be even stricter, but I digress). It changed somewhat in the last 5 years-- I can look it up, but the basic idea there is that, if you do plan on driving after drinking (which should be avoided whenever possible, but can be done responsibly despite what some insist), you want to stay below 0.05% to stay out of trouble. They also have something called "impaired operation" though I don't know exactly how that works or if it is an actual crime. yyzv mentions it above. Colorado has something like that, too.

You should also stay below 0.05% in the United States, though I am unaware of any actual criminal penalites for going above that. Some states consider a reading above 0.05% a rebuttable presumption of intoxication but not an automatic crime like being above 0.08%. The best idea is to drive with as little alcohol in you as possible and be familiar with the laws of the jurisdiction in which you are driving. I am very familiar with the laws in Illinois when it comes to DUI and am able to act appropriately.