All wireless access point, regardless of manufacturer, can support this much. But this also means that your clients will be downloading at 33.6 kbps.
The rule of thumb, regardless of manufacturer, is 25 wireless clients per AP. This rule-of-thumb will also depend on the type of wireless traffic going to and from the AP. If you're going to be doing nothing but web, email, chat, occasional FaceTime/Skype, then this figure could potentially go up to 35 wireless clients per AP. If you're going to be doing HD video streaming, then it's safe to say the value drops down to around <8 wireless clients per AP.
Next, you need to also consider what is your uplink going to be like. Is going to be on a FastEthernet or GigabitEthernet connection? How are you going to deploy your APs?
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