You can easily do this on the commandline with the
PDF Toolkit (love this software). Example:
pdftk.exe A=test.pdf cat A1 A20-end output out.pdf
---------- --- ---------- ------ -------
| | | | |
| | | | -> Output filename.
| | | |
| | | -> "output" switch.
| | |
| | -> Page range to include in output. This
| | will catenate page 1 and pages 20 up
| | to the end of the doc, effectively
| | deleting pages 2 through 19.
| |
| -> "cat" switch.
|
-> Sets the "A" variable to your input PDF file
for use when specifying the page range.