Vista - can't open or delete large mpg files

Using Windows Vista basic.........I have several large .mpg files on one hard
drive, this is where I record video to. But I can't delete any of these files
to make room for others. Windows Explorer hangs and will not process the
"calculating time remaining' for sending to the recycle bin. AND it uses 100%
CPU while trying to accomplish it. If I try to just wait & let it do it,
Explorer eventually crashes (Vista wants to close it.) I can COPY the files
elsewhere, but it takes hours. I do have lots of RAM and good CPU.
I found a fix on microsoft that addresses this exact problem BUT it is for
an update to WIN XP SP2, and I am runnng Vista basic. Does anyone know if
there is a fix for this for Vista?
Amanda (newbie to forums)