Ok I found a site that will do this for free for all Services:
http://www.youmail.com
Only problem is for sprint users read this (from sprint web site):
Call forwarding charges apply when forwarding calls to other cellular or landline numbers.
Call forwarding is charged on a flat, per-minute rate of $0.20.
Regardless of service plan, calls forwarded to long distance numbers are billed $0.20 per minute, plus applicable long distance charges.
Calls that are forwarded by default to voicemail or mobile messaging are not charged the standard $.20 per minute rate. Calls received when you set unconditional Call Forwarding (*72), Call Forward Busy (*74), and Call Forward No Answer (*73) are charged at $.20 per minute.
so in other words its a flat rate of .20 cents a min for call forwarding. The post I made above was from an outdated website and now sprint charges for this.... So you can have visual voice mail for free on a Services except Sprint.