TEXT to speech is available for the SE 30 but somewhat more simple that later versions. I can confirm that it does work on system 7, which is what your SE30 can run. Brilliant computer, very reliable, pleased your still up and running. You will need system 7 to run text to speech it is not something available to 6.08. If that helps and stops you wasting time.
Software for speech recognition and for speech response are under the area as these files.
Macintosh/System/Speech/About_This_Software.txt
Macintosh/System/Speech/English_Speech_Rec_1.5.4.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/About_This_Software.txt
Macintosh/System/Speech/PlainTalk_1.5/English_SR_1.5_1of2.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/English_SR_1.5_2of2.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/English_TTS_1.5_1of5.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/English_TTS_1.5_2of5.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/English_TTS_1.5_3of5.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/English_TTS_1.5_4of5.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/English_TTS_1.5_5of5.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/Mexican_TTS_1.5_1of3.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/Mexican_TTS_1.5_2of3.smi.bin
Macintosh/System/Speech/PlainTalk_1.5/Mexican_TTS_1.5_3of3.smi.bin
The can be found at the url address
http://www.info.apple.com/support/older ... elist.html
Apple made these available for the purposes of disabled / support.
Once installed one uses Simple text file, selects the text Command All and in the menu selects the read back option speak selected text.
To use TTS using Word 5 you require the Plain talk interface module which is installed in the commands folder of MS Word 5.
This is essentially a patch which installs to send the text to the apple speech driver.
The plain talk PIM as it is called is a something you should obtain from MS direct.
That will be more difficult as my experience of MS is that they debase you and try to sell you the newest piece of software, and shy off with the support for old WP's.