(usr-tc) Upgrading a TC

What is the *least* expensive way to upgrade a TC v34 system to v90? Is there one? Feel free to write me offlist at mailto:rjb@worldnetoh.com. Thenks! Rob - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.