Solidstate
Not sure i am qualified to advise others yet so this should be treated with a health warning...
I started by threading all the spokes onto the hub with the hub on its side then turned it over threded the other side in - careful not the let the spokes fall out when turning over.. with my series 5 hubs the spokes are held in a 15/20mm drilling in the hub so the spokes once pushed through are held at the correct angle and they overlap each other in the correct pattern ( no swinging about like the spokes with a hocky stick ends ) so they line up with the rim.
Then line the spokes up with the rim hole and thread on the nipple by hand and work your way round the rim till all are nipples are secured. I then went round again tightening each nipple by hand trying the get the same amount of thread left visable on the spoke say 2/3mm.
This is the stage I am at now - things to note take lots of pictures as they are before you start as referance and so you can put up before and after photos on your web site of choice
my rim had a direction arrow stamped inside with a width dimension and manufactures stamp so the rim needs to go back on to keep the rotation correct, also bear in mind that if you are getting rims powder coated these marks may not be so easy to see afterwards......
Hope this helps also check out some of the wheel builder websites as these have some helpful notes - which I have probally ignored......
Give it a shot if you have a play and not happy just remove the spokes and nothing lost but as bit of time - it took me no more that 20/30 mins from start to finish to the stage i am at.
Keep me posted if you give it a go.