Why do it yourself?.. You can send them off you know!
Talk to a few companies, we found one that basically accepted them in year/decade/epoch-labelled boxes, and came back in a zip file corresponding to that time period.
They have to be loose, you have to take them out of the albums but then you just box them up and send them off. You get a nice memory stick through the post.
Depending on a lot of factors, obviously, but the end result could be cheaper (assuming you use the time it takes profitably) and better than doing it yourself.
(It's one of those things like servicing your own car, doing your own plumbing, building your own bike wheels - yes, you can do it yourself, but it will be better if done by a professional, and thinking you're saving money is a false economy because you might as well spend the time doing what you are actually professional at yourself instead.)
We found we actually looked at them when they came back digital, in a way that we wouldn't have bothered rummaging through the old albums in the loft.