Badly need help and advise

Hi, I badly need help and advice. I am a nurse from Philippines and now I am in denmark together with my girlfriend. We applied for student visa and was granted a residence permit until December 31, 2010. It is very difficult to get a working visa to DK from my country. So what we did was, we enrolled in a folkschool here in grinsted. Before we go here we have already sent our diplomas and other nursing papers to sundhedsstyrelsen and we were granted a temporary autorisation. But we have to find a hospital were we can have a trial period of 6 months, once we are finished with the trial period and gets a positive feedback, we can get permanent autorisation. And of course we have to learn the language. so we applied for a student visa and was granted
It has been 7 months that we are jobless, we have worked for 5 years in the hospital before. we have sent an applications to almost all hospitals and some plejecenters but no luck... Right now we are on a praktik (gratis) in plejehjem. It's really really hard. In addition to that my mom who lives here for 13 years became pensionist and she only gets 6 thousand kroner from kommune. I'd like to ask for help and advice on what to do. How can we extend our visa? 3 months left….please help…. we are willing to take any job as long as we can stay and get money and take care of my mom... Godbless to all…