redirecting to .com from .net and .org

Sorry if this has been covered before, didn't find it.

[I Will Make It]

Hi, I know black hat isn't to good while trying to get good listings in the serps.

My question: Is it rules when it comes to redirecting from .net and .org to .com?

Lets say I want this domain name:
www.mydomainname.com
I also want to stop competitors and spammers from holding the names mydomainname.org and mydomainname.net, so I go ahead and buy these too.

Will I get in trouble if I redirect them to my .com domain which is my main domain, the one I want to use?
Which way should I do this to make sure google or other search engines won't hate me?

Again: I'm sorry if this question has been up before. I just couldn't find it, and I really need to do this quick. I've found a great domain name which still is free on .com .net and .org. and I just don't want to see it gets occupied.

[encyclo]

Buy all the domains, pick the one that you want to use, and set up a 301 Permanent redirect from all the other domains to the primary domain. This is not "black hat", or problematic - in fact it is exactly what Google recommends you do in such circumstances. :)