Installing Lexmark 1100 in Ubintu

Hello,
I am attemting to install a Lexmark 1100 all in one in Ubuntu 8.04 but this is as far as I get and I have tried a few times.
Any ideas please.

barrie@barrie-laptop:~$ sudo mkdir lexmark
[sudo] password for barrie:
barrie@barrie-laptop:~$ cd lexmark
barrie@barrie-laptop:~/lexmark$ wget http://www.downloaddelivery.com/srfilecache/CJLZ600LE-CUPS-1.0-1.TAR.gz
--14:36:33-- http://www.downloaddelivery.com/srfilecache/CJLZ600LE-CUPS-1.0-1.TAR.gz
=> `CJLZ600LE-CUPS-1.0-1.TAR.gz'
Resolving www.downloaddelivery.com... 12.120.2.110
Connecting to www.downloaddelivery.com|12.120.2.110|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 4,301,167 (4.1M) [application/x-gzip]
CJLZ600LE-CUPS-1.0-1.TAR.gz: Permission denied

Cannot write to `CJLZ600LE-CUPS-1.0-1.TAR.gz' (Permission denied).
barrie@barrie-laptop:~/lexmark$
barrie@barrie-laptop:~/lexmark$ tar -xvzf CJLZ600LE-CUPS-1.0-1.TAR.gz
tar: CJLZ600LE-CUPS-1.0-1.TAR.gz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors
barrie@barrie-laptop:~/lexmark$
barrie@barrie-laptop:~/lexmark$ tail -n +143 z600cups-1.0-1.gz.sh > install.tar.gz
bash: install.tar.gz: Permission denied
barrie@barrie-laptop:~/lexmark$
barrie@barrie-laptop:~/lexmark$ tar -xvzf install.tar.gz