Oligos vs. Chromosomes

[In C. Kim]

Greetings!

I have a very dumb question.  Since I do not have a background in
molecular genetics, this newsgroup seems to be the right place to raise a
question.  Many oligos for human chromosomes are readily available for PCR
and in situ hybridization.  I am wondering whether there is a web site(s)
to visualize approximate binding sites of oligo probes to chromosomes
(e.g., p, q, or centromere).  Please briefly describe how to do it, if 
any.  Thanks. 

In C. Kim