Lens Correction in LR3

[cupic]

Need to know about creating a new lens profile as I have bought a Tokina 11-16mm for the D300 and there isnt one there ,links to tutorials if available

cheers

[dieselpower]

Get the lens profile downloader from http://labs.adobe.com/downloads/lensprofile_creator.html and install and run it.
Choose Nikon in camera make, pick lens model 11.0-16.0 mm f/2.8 - there appears to be a profile there for a Tokina 11-16 f/2.8 for Nikon D300.
Select that profile and click Download.
Reload LightRoom and it should be there.

It's a user contributed profile so may be a bit hit and miss, but this should at least get you a start point.