Im not sure about others, but when I was 15 MY ONLY INTREST WAS THE FEMALES. Whats up with the times today, rather have a bloodelf/nightelf girlfriend over one irl.
On a serious note, you talk about not having an chance to get work in your town. Saying that its pretty small, my guess is that if it is that small, there should be some type of ranchs/farms/industry where people are working hard in there backyard and most of them really could use some help with what they are doing. (Harvesting fields and what not is not easy or quick work, but long hard work that most people would be greatfull for a teenager to help out with)
If it is the small town, I am sure there are also those houses with allot of scrap metal, junk yard like front and backyards. Go talk to them, find out if they would like there yard cleaned up. Tell them you would like to recycle the metal and will split the profit with them. Then go clean up there yard and get the junk metal scraps and what not to a recyler.
Get a paper route.
Currently you are not able to, but when you do get your computer back look into some type of data entry job.
Door to door car/truck/rv/tracter washing.
Mowing lawns, and doing yard work. (If it is that old and small of a town I am sure there are some well established people, as in they have been there for ages. Which that leads to elderly men and women that are not currently phisically fit to do such tasks any more)
If there is any mechanic/autobody shop go in and ask if they need someone to clean up around the shop and in the process you could actully learn about the trade. Not to mention when you do save enough money up, and start driving I am sure they will help you in fixing up an old hotrod which then leads to the ladys in high school.
Get some hobbys, for instance organized sports not through your school. Woodworking (can also sell stuff at swapmeets that you make), auto body repair, auto repair in general, painting, drawing, skateboarding (build a half pipe in your backyard, I am guessing you guys have the land to do so), aggressive skating (rollerblades, and also goes for a halfpipe), bmx where you can ride not only halfpipes but dirt jumps trails and such things. Look into hikeing, backpacking, camping, fishing, bird watching. Start a garage band.
There are endless things you can do with your time, its just a matter of investing to find something that suits your personality. The reason you feel at such a loss with out wow is that it sounds like you have nothing that you are intrested other then wow. If you find other things to do besides wow, you will find that you don't really have an addiction, but just nothing else to do and do so out of boredom with all the free time you have.