Bean, take this with a grain of salt.
I haven't taken any nursing or pre-nursing courses online, but I've taken other ones (English, communications, etc.). Based on your comments, I think your perception of online classes may not be accurate.
The online courses I took (and the ones my friend takes, earning her Master's in accounting online) were very interactive. It wasn't just a matter of reading material on your own time and then taking tests or writing papers. Instead, we were given an online discussion question or issue each week, and we had to participate with our classmates using a sort of bulletin board type system (that was very ill-designed). We also had to download assignments from the site on a weekly basis and turn in weekly assignments (no "go at your own pace" option).
We also had to do group projects and write group papers after being paired or grouped by the instructor. This can be a real pain in the backside because all of your communication with your group members is by e-mail. If you think it's hard to get people to show up for in-person meetings, try getting them to show up for online meetings using a crappy Web interface!
In my friend's case, she is required to be online in the discussion module at certain times during the week, so don't assume you won't have to "go in to class" at regular times. Find out what your school requires in this regard.
The online course interface used by my university is called WebCT, and I can't say I recommend it. The discussion interface, which is so important, is very clunky. Aside from that, you have to click on several different areas of the site in order to gather all the information you need for your weekly assignments. (For instance, you have to click on one link to find the reading, then you have to click on another link for the assignment, yet another link for important announcements from your instructor, a different link for the discussion, etc.)
As you might surmise, I found that online courses did not work well for me. You definitely have to be a self-starter to get through these, and you also need to be extremely organized.
Good luck to you!