be zdmak on the internet. Its a tool made by SIR 3026 and zdmak has it on their website for 361 plus shipping, this will do up to e36 but not e38 ,z3,e46 etc... I talked to another company who wants over a grand by the time you add the adapters for the others. ZDmak also is on ebay with the tool with a buy it now for paypal of 365. You can also use paypal on their website.
This seems to be the tool i find on most websites as the most common.