having issues installing software

[hellbound201]

I am using slackware 11.0 kernal 2.4.33.3

i go to command prompt and type 'installpkg <aim.1.5.tgz> and get this error
"-bash:syntax error near unexpected token 'newline'"

i tried it again typeing this 'installpkg aim.1.5.tgz and get this error
"Cannot install aim.1.5.tgz: package does not end in .tgz"

what am i doing wrong in this?

[aliov]

First of all be sure that you're installing the package as root
second are you sure that this package it's a Slack package,if not try this command:
explodepkg aim.........tgz,
and be sure that you see the slackware setup script inside (like install/slack-desc).
if this command extract the file that in this package so it's ok else then it's not a Slack package (explodepkg explode the package in current directory avoiding to clean directory again out it in a new directory).

Hope this help