Front wheel hub assembly replacement

[FiremanJay]

Well it's that time to replace my front hubs, truck has 80,000 miles on it and the wheels are loose. Some one correct me if i'am wrong but i understand that i need to replace the whole hub assembly and not just the bearings.
What do i need to purchase other than the actual hub assembly? How involved will it be to change the hubs?
I am not a mechanic by trade but have built and repaired motorcycles and have plenty of tools, i may have to get a hub puller big enough to do the job.
Also any body have a breakdown of what the job looks like ie. (the parts catalog schematic) for this, pics would be nice as any additional info.

Thanks in advance
Jay