Ah but wait!
As one who was on board with USB recording from the original Samson USB mics..(nope..too muddy) to the eventual MXL USB007, 008 etc (nope..too brittle, and hollow sounding)
After some time, they started making these mic-interfaces that connect directly to whatever mic you like..and I was SOLD..I went with my favorite remote recording mic ever the Sennheiser MKH416 and a USB mic interface made by MXL called the Mic-Mate..it was simple and worked okay, but it was a little noisy, only offered three selectable input levels..and didn't hold up very well..THEN I tried the Centrance Mic Port Pro..sounded a lot better AND has a monitor jack for a pair of phones..so it was all there. You could use any mic you like, AND get a headset with an adjustable amp but for some reason they used a flimsy little "mini-USB" plug going into the unit..after about only a month of use the little plug would not stay in the jack, and when it did, it let in connection static..Really dumb to use that little cell-phone plug/jack combo on something that will get tossed around, and plugged in and unplugged a lot..
So I tried the BLUE "Icicle"..HORRID..it should be taken off the market..noisy, and VERY low output..just nuts...so light it felt like there was nothing inside it, and virtually all plastic. Shame on them.
THEN I found "the one" (at least for my needs) the SHURE x2U
http://www.sweetwater.com/store/detail/X2u
It has the full size USB plug, and a sturdy "feel" along with a FLAT area that is rubberized to accomodate sitting on a desk (or car dashboard) and it sounds great! We now have a boxful of the other USB interfaces, and have outfitted all remote voiceover systems with these..Under 100 bucks and the accomodate Vista laptops as well..they are the clear winner for us..I have a box full of the other ones..and we paid full price for them all.
BTW We are using the older, but much wider response MKH415 mics (12V versions converted to phantom) ..on these systems..the current Dish Network TV spots that are running were recorded in the back of my wife's Jeep Wranger in Maine..I'm hard pressed to tell the difference from the studio.
BEST BET for a home voiceover studio is to use the mic you have been comfortable with, or for that matter shop around and find one you really like..then just pair it with a USB mic interface and you are set to go.