Nice one, you'll love it and probably notice a big difference after 6 years off!
what bike you got??? upgrades??
I'm on a Supreme DH, custom build from the frame with pretty good spec.
i think the first thing i will do is probably the crank an bottom bracket set up an maybe a higher pair of bars??
The cranks are a minefield with the Supreme DH and e13 - I've made a few posts so look 'em out before you decide to go swapping anything

Also made a DH bike setup thread which has some good info in there.
It's all about the low front end these days too - long forks push the front high enough. I've dropped my stem as low as it'll go, it's a Sunline Boxxer stem which is almost negative rise and have flat FLi bars. Handles like a dream.