Reliable detection of Win98 may not be possible. Different babies walk at different times. Some proficient crawlers will walk later, since they already have the ability to get around quite well.
Some younger siblings walk early, just to keep up with the older kids.
If your baby hasn't started walking by the time he's one year old, he probably will within the next few months. They keep their legs wide apart and seem to hesitate between each step, jerking side to side as they move one foot forward, then the next. They generally get upright by putting their hands out in front, lifting their bottoms, and pulling their feet under them. Not very graceful, but it works. Your toddler will experience his share of falls, but if you don't overreact to these tumbles, he should get right back up and try again.