Be aware at this time of year there are seasonal jobs as people get busy over-Christmas. Although these are short-term jobs, it is a job and looks good on your CV as it shows you were trying (and avoids gaps). Depending on the area it can also lead to further work. ALthough they might not be career jobs, they still give you skills you can talk about and pocket money for Christmas!
ALso, the best resource you have is people you know. People are generally willing to help, particularly if you've done a lot to help yourself already. Forwarding an email or handing a CV and Cover Letter to their HR department is not exactly putting them out.
Be positive and not wishy-washy on your CV. Use words like demonstrated, achieved etc. nothing hand wavey.
The internet is now a good place for jobs listings, there are often ones devoted to a particular career type. It may also get you in touch with a good recruitment consultant - I say may, as there are a lot of bad ones out there! They won't harm your chances, they just won't help either! If you can find a good recruitment consultant, then it's worth it, but htis is much easier said than done.
The most important thing is to be flexible. The level of unemployment and redundancies at the moment is particularly severe, so showing that you are adaptable and will take a job that will lead to the job you want, or a similar job to the one you want that could lead to you moving sideways, means you are a more attractive prospect.
It is so hard when you just get ignored as employers are facing unprecedented numbers of applicants for very few jobs, try not to give up or get down (again, easier said than done!). Good luck, I know how you feel