Support Unable to delete Imported files from OSX Snow Leopard

I wonder if anyone can assist. I have recently imported files from my HTC Desire C memory card onto my i-Mac running Snow Leopard and I have been unsuccessful in removing these files from the Mac.

I had copied everything from the memory card (this was not in the phone at the time but rather in a card reader) onto the desktop in order to copy onto a larger unformatted card which has worked fine and my phone data is all there. However, when I attempt to remove the data I have copied the trash tells me the files are locked.
I have in turn unlocked all said files unfortunately to no avail as the files still do not delete. I have also tried connecting the card and phone attempting to delete said files when they are connected again with no success.
There is another symptom also which is that I am now unable to delete any file from the Mac whether they have been created locally or not.

There are 3 main files which I cannot even remove from the trash to put into another file and these are...

customized-capability.xml
default-capability.xml
default-capability 10-00-27.xml

from doing a little reading I believe that these are files that add functionality to me phone when using 'smart features' ie. browsing etc. but in turn have no physical use on a desktop system.

If anyone is able to advise any methods which I may be able to try and remove these as mentioned it has now resulted in me not being able to delete anything from the system.

Thanks in advance for any assistance!