need a new rear wheel

i need a new rear wheel i bought my bike from academy sports and outdoors and a few of the spokes broke and i put another tire on my bike and now that one is to large and is pressing the chain against the frame and is no shaving away one of my down tubes. Iam wondering were to get a more heavy duty wheel and spokes??

BikepartsUSA.com - Your Online Bicycle Parts Superstore
Thay have everything

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I may be a Noob...BUT...Not for long

Go to your local bike shop....At the one in my town they have the 26x2.125 heavy gauge coaster brake rim for 45 bucks....If it is not a coaster brake it will be even cheaper yet....
I went throught 2 back rims before I got smart and bought a heavy duty rim....
John-John

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IF I CANT FIX IT,IT ISN'T BROKEN!....ummmmmmm so I thought....