I have a 1999 Chevy Blazer LS and when i got it (a gift from my mom) the only real problem was that both seat adjustment handles & knob were broken on both the passenger and driver seats...My question is can I buy the handles or will I have to replace the seats?

This is a very common problem and there are many fixes available on the web. Many of the updated, aftermarket handles address this exact problem. GM states that the entire recline mechanism must be replaced due to the failure at the shaft to which the recline handle attaches. If your handles are the only thing that broke, then they can be purchased pretty cheap.

Run a google search on 'S10 recline handle' and you'll find a multitude of fixes.

Good luck!

"HELP" brands make a replacement handle. You can find them at most autozones/pep boys/napas.

Someone else found these (http://www.wittydeals.com/product_info.php?products_id=29&osCsid=c9981dd1908 98180df0e54872cdecff0) and posted. They look like they would do the trick but I haven't ordered them yet. I'm using a flathead screwdriver for now...:D

I didn't want to point to one of the many sites that result from the google search I suggested simply due to the questionable reliability of such sites.

If you do go with one of those fixes, let us know how the it turns out.