You can take a stock Jeep pretty much anywere for an alignment, but here's the ones recommended by people on this board:
Stock Jeeps:
Tower Chrysler in the SW
Big 4 in South
Fountain Tire on Moraine Rd NE
Fountain Tire on Northmount Dr NW
Kal-Tire on 42ave SE
Lifted Jeeps running 35+ tires:
Harper Tire behind Modern Motors in the SE
Blakin and Lane across from Northhill Mall in the NW