Well, there are not many good dealers in Chandigarh. Two years back, When I was building my previous rig, I went to a lot of places. They don't know jack of computers. They refused to get me anything over a P4 2.4 GHz or some even said celerons.
Finally I found this place called Sudharshan computers in Sector 22-C (above the GE Money office). He was able to get me a good Athlon 3000+ combo from Delhi. He was also able to get me a XFX 6800GT. He had a decent place and stocks a variatey of stuff now. But he is not Antec or CM dealer.
Theres also one more place Lynx computers in Sector 10. He is a authorized dealer for Antec and distributer for Cooler Master products. He usually keeps a lot of stuff which is not not normally available at other places. He can also get any thing you want.
The problem with Chandigarh is that there are very few computer enthusiasts here. A person even in the IT field may have two houses, two cars, but does not buy a PC for himself. So no demand for good stuff. Its all sub 25k PC's around here with a Micro ATX mobo with onboard everything.