How to & tips to Install a "Delphi SkiFi3 XM radio" setup (2:13pmEDT)

Yesterday, I found a 3+yr old complete "Delphi SkiFi3 XM radio" setup all the car accs included. WOW, I was given this as a birthday gift (lost it-found it) & now I finally get the chance to be "commercial Free in my '07 !!!!!!!!>"
Or will I ??
This Delphi came w/ 2 ANTENNAS-both having about 20+ft. of thin wire. Yes, I know 1 is
the Normal needed antenna & the other is for FM transmission over an unused FM
channel--in So. Fl there R NO OPEN channels !
There are no REAL tips in the instruction book on where & HOW TO install & hide the antenna
wire. So here I sit w/ baited breath & lots of coffee as I finish mowing the lawn & watching
AMERICAN COLLEGE Football & hopefully someone has what i need (best way to install antenna or--lookie here & find the hidden wire under the dash etc.) to avoid a potential
Plug & Pray Install...thanks.