Newbie needs info on modest laptop speakers

Hi - I'm very much a everything I've browsed in the forums so far looks like Greek to me...!! I have a laptop provided by my employer so am limited to what I can do, except maybe hook up a good set of speakers. What I'm looking for is "gotchas" like the speakers need to be a minimum wattage, etc.
for a Dell D630 Latitude. Thank you!!
Are you thinking of desktop monitors or speakers to actually fill a more or less large listening room with (or something fulfilling both requirements)?

Anyway, if you intend to build a system consisting of only your laptop and a set of speakers, take a look at this active monitor, that I found quite amazing in terms of speed, dynamics and detail (which is how I interpret "gotchas").

Then again, any advice is dependent on another question, though: your budget please?
Karelfd is right..for instance, if budget is no issue, then...

If you're strapped for cash and are limited to mass market products, these are widely available, sound okay and if you're a Sam's Club member, only $70...

Then there are plenty of solutions that fall in between...for instance...

Let us know budget, size restrictions, whether you're willing to visit a speciality store to purchase, etc and we can make some further recommendations.
What I use at home and at work are the Klipsch ProMedia powered sat/sub combo. You just connect it to your computer via the audio out and adjust the volume through the left speaker knob or iTunes. I was able to buy these for under a $100 per set, but I think they have been discontinued.

If you want to spend a little more for better performance consider the NHT powered PC speakers.

Good luck!
Here's a good solution for about $450: Devilsound USB DAC and some Audioengine A2 speakers. I am using the Devilsound DAC in my main system, while my Wavelength DAC is in the shop under going some changes, and the little Devilsound is quite good! At my office I use the Audioengine A5 speakers and thay are very good. And, I've only read positive stuff about the A2's.

What do mean "gotchas" as in low wattage speakers?