UPDATE..... I cannot do this port forwarding, I've tied and tried, watched videos on youtube received help off you guys and spent endless hours researching, I just cannot get my head around it! I've now got a static IP address but its as much use to me as a medium rare fillet steak is to a vegetarian!
If anybody would like to guide me through setting this up step by step I'm happy to pay you for your time! its very very close to hammer time for this dvr, its becoming the blight of my life.