Since you are using your IPOD, why not just get an intregrated amplifier and don't bother with a receiver...
Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amp w/o pow 310-301
then hook your ipod up with
Ziotek ZT1900666HC1 6-Feet Ipod 30Pin To Rca Stereo Cable, White - Amazon.com
install a 1 of these on each line out from the ipod adapter
Amazon.com : Monster ILJRY-1 F Single Female RCA to Dual Male RCA Y-Adapter : Electronics
then run a set of these to the amp and a set to the sub
Amazon.com : Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black : Electronics
then run speaker wires from the amp to the bookshelf speakers...
EZ PZ Lemon Squee-Z
them links with the cables in them are just for example you may be able to find better ones cheaper... but that is where I would start...
Hook the ipod up to the ipod cable, install a splitter on each end of that cable, then install 1 rca plug from each stereo cable onto eac hsplitter, then plug a set into the amp and a set into the sub...
I would also install a set of these in the amplifier...
Amazon.com: FMOD Crossover Pair 100 Hz High Pass: Electronics
that will ensure your amplifiers power is going towards making mids and highs, not reproducing bass that the sub woofer is taking care of anyway...
good luck and welcome to the forum, you can have a decent sounding system there for cheap money, I own that lepai amp and it is impressive, paired with some efficient speakers its loud enough for a medium sized room for sure...
What is your actual budget, you would be much better served with a set of used bookshelfs IMO, look on ebay for some used infinity rs125 or 225 's, or maybe some mirage M190 's, or some boston acoustics, polks, ect. there are plenty of good used bookshelfs out there in the sub $100 range...
Let me know your actual budget and what you have and want specifically, like I have my ipod, but want 2 speakers, and a sub with all the wires needed for $300...