System implementation

What system you're trying to implement would help.

If it's a system of storing baseball cards it might be different from say, a Windows 2003 domain at multiple sites.

System implementation is usually carried out by "SYSTEM people trained and educated to Systems, Training for your people to use the system comes from the System people and the itegrators of the profiles into a system. If there is no training available, and even IBM and 3M mess this up at times then all you have is a truly expensive Jack-Leg when you consider all the man hours lost trying to use a system that your people don't know how to use.
Since I don't know your business your needs allI can say is that there are some outstanding systems-in-a-box that include extensive training and serious on-going maintenence traing to keep your people fresh.
RIVER FREIGHT

You need to begin by interviewing the area that should always DRIVE system implementations; the business. If you already have a thorough business requirement document, then you are way ahead of the game - if not, you must ensure that the business is involved in the beginning; by gathering business requirements in addition to discussing how/when the implementation will be done. This discussion should also entail how the users will be trained; how (stand-up, systematically, etc), and when (one month before the system is scheduled to implement, etc).

My main point here is ensuring that the business is always included in any type of system implementation.

One additional point: ensure that you have a good and thorough contingency plan in place. This will aid you in case the implementation is backed out and not done when originally planned.

Good Luck!