System Requirements for Windows 95/98/NT 4.0 users 
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Internet Explorer 4.0 or Above 
MS Agent 2.0 Control (395 KB) http://activex.microsoft.com/activex/controls/agent2/MSagent.exe
Tru Voice Text-to-Speech Engine (1-3 MB) http://www.microsoft.com/msagent/downloads.htm#tts

Speech Control Panel (927 KB) http://agent.microsoft.com/agent2/spchcpl.exe
At least one Character (.acs file) http://www.microsoft.com/msagent/downloads.htm#character



System Requirements for Windows 2000/ME/XP Users 
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Tru Voice Text-to-Speech Engine (1-3 MB)  http://www.microsoft.com/msagent/downloads.htm#tts
Speech Control Panel (927 KB) NOT FOR XP http://agent.microsoft.com/agent2/spchcpl.exe
SAPI 4.0 runtime support (824KB) http://activex.microsoft.com/activex/controls/sapi/spchapi.exe



Required:
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A Pentium 100-megahertz (MHz) PC (or faster) 
At least 16 megabytes (MB) of RAM 
At least 1 MB free disk space for the core components 
An additional 2-4 MB for each character you install. 
An additional 32 KB for each language component (dll). 
Recommended:

An additional 1.6 MB free disk space if you plan to use the Lernout & Hauspie TruVoice Text-To-Speech Engine for speech output 
An additional 22 MB free disk space if you plan to use the Microsoft Speech Recognition Engine for speech input 
A Windows-compatible sound card 
A compatible set of speakers and microphone 
