Compaq's are nice for corporations, because they are so standard... Like, you have only so few spare parts needed to service -all- systems. Comes in handy.
For home use, well... Compaq's are generally stable if you run only the stuff on it they are intended to run on. At my company, we run a network that is 95% compaq systems... Apart from a Deskpro series with extremely bad harddisks (which we are replacing) there is not much bad I can say about em. Just have someone who can service them: Their support branch is far worse then their hardware.
A CD burner and an USB webcam should be no problem... Just don't go installing exotic hardware like TV tuner cards, vague SB Live! "compatible" soundcards, etcetera.But internet use, yea, you can use a Compaq for that
If you'd give me the model number of what you intend to get, I could lookup the hardware in it, perhaps recommend likely upgrades...