I am intrigued by knitting design software. I have used a similar program for designing sewing patterns but I would love to have the help with knitting for others.
Has anyone used any design software and what kind do you prefer?
Thanks! LindaB2603 
you should check out the “knitting wizard” software. they have quite good demo versions.
FK
You can try some demos here.
http://www.software4knitting.com/index.asp
A few people have the knitting wizard I think.