Start off with plain old treadmill. No need to modify the treadmill in anyway. Using an old piece of scrap metal got from and old weight bench to hold the front of the bicycle, I cabletied it to the frame of the treadmill. Anyone with some welding skills could make a similar stand.
Step 2: Insert Shaft
Insert threaded bar or two bolts on the stand to rest the bicycle frame.
Step 3: Attach Bicycle
Take the front wheel of your bicycle and pop it on the shaft and tighten the nuts . Easy as that. Digital display will give you the amount of miles and speed you are cycling. Simple as pie!