Ah ... gotcha. So it's not about not wanting to lift, just $$ ... I can WELL understand that.
Weights aren't totally necessary. You can accomplish a LOT with some basic body resistance stuff. Also a set of resistance bands from WalMart should run you between $10 and $20 and they'll add tons of options to a basic workout.
Try pushups, tricep dips, pull ups, etc. Here's a link with some ideas and basic descriptions. You can also search here and there are quite a few links to videos on youtube that will help you to see how to correctly do some of these things.
Here's a link to some things you can do with resistance bands, as well:
When you get to the point that you want to buy weights, I'd skip the "pastel Barbie weights" (*grin* a line from my favorite book - New Rules of Lifting for Women) and go for a set that you can add weight to. You can find a good one at Target or Walmart for around $50 or so. (edited - I've seen something similar to this set at Target for $49: http://www.sportsauthority.com/produ...ductId=2173649
) That way you won't be limited to a 3lb weight or a 5lb weight, which will quickly become too light to have any value to you.
Good luck! Working my arms has been the best part of lifting weights for me. To be able to see definition and muscle there, rather than the "wing" of flab is the best thing ever!!