An instant NT password cracker

a seven character password would be pie to bruteforce, on my machine it takes about 30min with alpha-num. Getting up into 8+ is where it gets long tho.
I think you should recheck your information, because here is a person that has actually accomplished it and you can submit ones for cracking :
http://sarcaprj.wayreth.eu.org/
his NTLM hashes use upper/lower alpha-num-15 symbols and are only 18gb (and for sale!)

How big are these tables?
There are 30 files, each one is 640MB. A total of 18750MB.

How much time was spent for the creation of these tables?
On my AMD 2000+ with 512MB of RAM we spent 3 days for each file.

so about 3 months, not 200 days

I really wish someone would overhaul the rainbow crack app, like adding more algorithms, compression, and optimizations.