How do I find rollers that fit this door?

If I can not find any can I use any kind of replacement rollers for a sliding glass door?

What do I need to do to replace the roolers is there a step by step method, or something with verbage and text telling me as well as showing me how?

I was watching the Mr. Villa's show a couple of week ago on our local channel and he was talking about replacing the rollers on a sliding glass door. problem was I only saw the last 5 min. of the show.

Could you please poing me in the right direction with information on how do I cange the rollers.

Thank You in advance for the help andinformation.

Regards.

Terry Schaffer

sbbct@sbcglobal.net