anybody know of any sites similar to www.tweakhardware.com? I love this sorta stuff!

Most sites have lots of links. Try pcmods.com, they sell cool stuff and have links. www.moddin.net is another site. Directron.com sells lots of neat stuff and has forums with very good advice on unique how to's.
also try www.multiplaycity.com

Once you go to one site there are links to tons of others

Let me know if you need more!!!