jonathan_cL,
You are currently showing up as unlicensed. To be able to download modifications and/or receive support here at vBulletintemplates.com, we ask you to please click
here (vB-germany users click
here) and enter your email address, to show us that you are licensed.
You will need to use your customer number and password (which will be in the email you got when you paid for your license) to access that page. Please note that your email is case sensitive.
Once you do that you will be able to recive support via the forums here. Asuming your board is not hacked you can also obtain support on how to install styles at vBulletin.com's forum (offical support boards).
The best way to contribute is to post modifications, style sets, or graphical work here in the proper forums, this way everyone can reek the benifits of your work

. Also helping others via the support forum is a way to contribute.