Assuming you don't already have connection to seed capital, according to many of the wisest, and most successful hedge fund managers in the world, the fastest, and most realistic way, is to first start your own business, make enough seed money (25M) minimum to start your on proprietary fund (many legal ways to easily create the actual hedge fund) implement your particular investment objective (macro, arbitrage, long/short, etc.), string together a 5 year market beating track history, and the money will find you.
Pick up a copy of Hedge Hogging by Barton Biggs and Inside the House of Money by Steven Drobny for recent accounts of the inside goings on and the challenges of raising money without "connections"
Hedge Fund Seed Capital
Hedge Fund Seed capital is the money a hedge fund tries to raise to launch or within it's first year of operating to try to "get it off the ground" and hopefully raise enough assets to appear respectable to initial investors and provide initial momentum towards breaking even as a business. Hedge fund seed capital is in high demand, there are literally hundreds of investment groups looking for it right now and only three or four handfuls will receive any significant amount of it. Some hedge funds are seeded with as little as $500,00 while others receive up to $350M. From my experience I would guess that 68% of first year hedge fund seed capital levels range from $3M to $25M.