Foo - Speaker wire

Today I managed to haggle and acquired some Klipsch Promedia 2.1 speakers :). These things look and sound great! They're quite powerful though, and I don't like having speakers placed on either side of my monitor, just 3 feet away from me. Also, the satellites aren't exactly tiny, and I'd like to free up desk space by mounting them elsewhere in my room. THe problem is that the cord which extends from the speaker isn't at all long enough.
Here is how the cord configuration is:

3.5mm analog stereo plug --> two adjacent wires for 6ft length ---> wires separated with ends stripped for connection to back of sub woofer.
The 3.5mm plugs right into the back of the satellite speaker.

My initial thought is to simply buy a 3.5mm male-female extension cord for each speaker; easy radioshack fix. I can't help but feel like it's not that easy though -- that I am missing some important slice of information.
Is it that easy? Or is there something more?

The speaker cable is pretty small in diameter, maybe 22ga or even 24ga. I'd hate to make the amplifier work even harder to force current to the speakers.

stereo speaker wire should be min ~16 gauge, but computer speakers often have thinner wire. what's the application? not sure what kind of plugs you are talking about - RCA, banana, phone jack (mono or coax stereo headphone 1/8" or 1/4"), something else?

headphone, 1/8" plug.

I have designated these speakers to movie watching. For everything else, I use my headphones, and love it. But I like the rumbling effects that a speaker system has to offer for a movie. THe satellites are 35W each, two satellites.

1/8" headphone plugs and wire are tiny unless the speakers are powered and the wire is carrying line-level signal to the built-in speaker amp. otoh most of the power needs to go to the subwoofer, the treble end of things doesn't require as much ummph.

Well I know that. The subwoofer is 130watts, whereas each satellite is only 35.
I bought a 1/8" male-female extension cord from Radioshack, and I noticed that the diameter of the wire is much greater than the cord that protrudes from my headphones. I assume this is to keep resistance down? Will I have any negative effects on sound by simply extending that wire?

I'd convert from the 1/8" plug to something beefier, at least go to 1/4" plugs. At 35 watts, you really want 18 to 16 gauge wire, and you can't really do that with a 1/8" plug. you only need to shield for line-level, so if it's speaker-level, you really don't need shielded coax plugs, you could go with banana plugs, spring-loaded or threaded speaker terminals.