Trying to update my kernel as described here

BackTrack 4 Pre Final Kernel Update

and on the 3rd and 4th step, i get the following messages/errors:

#apt-get install -d linux-image
Reading package lists... Done
Building dependency tree
Reading state information.. Done
linux-image is already the newest version
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded
i didnt figure this was of any consequence until I ran the next command

#dpkg -i -–force all linux-image-
dpkg: error processing linux-image- (--install):
     cannot access archive: No such file or directory
Errors were encourntered while processing:
Any thoughts on the matter?