How To Find Information

Establish exactly where the POW camp used to be.
Visit or telephone local libraries (especially reference libraries) in the area and search for any books or newspapers which mention the camp. Most libraries have computer searches these days and they can often help immensely. Note: A lot of POW camps in Great Britain did not receive many POWs until after the D-Day landings of 1944. This was because it was felt that if thousands of German POWs were held in Great Britain and the Germans successfully invaded, then they would have a ready made army if these POWs were liberated ! Therefore, many POWs were sent to Canada and the USA during the early and middle stages of the war. Keep this in mind when searching old newspapers via date.
If you know the name of a local newspaper which existed at the time of the camp, and the newspaper firm still exists, contact them and ask them if they have anything in their archives. If not ask them if they will publish an appeal for information. Most local newspapers are always looking for a story especially the type which gets the general public involved.
This method sounds strange but try it ! Find a local telephone directory of the area and look up and telephone all the old people residential homes. Tell the person in charge what you are looking for and ask them if they will ask the pensioners if they can recall the camp or if they have any tales to tell. People who lived through the war often have fascinating stories to tell and you'll be surprised what they keep in old shoe boxes !
The PRO (Public Records Office) in Kew, Surrey has a wealth of information and even an on-line web site which you can search. However, the staff of the PRO will not undertake searches for you. You either have to make a visit or hire a professional researcher. Given that I live in Wales, it was not cost effective for me to travel to Kew, so I hired a researcher. It cost me £23 in the year 2000, and for this I got one hour of research time, a photocopy of the complete Island Farm file (provided me with the POW English examination result pages) plus postage. Information on the professional researchers of the PRO can be found on their web site.
When you have a reasonable amount of information, host it in a web site so that you can attract visitors. You often find people with a PC will search their home town as a key word in a search engine, so if you can get your site recognised, or links to your site via local history sites, then this will help. If you don't know how to host a web site, let me know, and I will help you all I can. Alternatively, email me the information and I'll host it for you.
Frequent WWII forums. There are a lot out there on the web and they are often frequented by historians & enthusiasts. These people are always willing to help if they can. A forum which I recommend and which I have used often is to be found at http://www.feldgrau.com/forum/forum.html

GOOD LUCK !!!

P.S. If you ever do host a web site let me know and I will put a link to it from my site which will all add to help boost your visitor numbers.