debian commands

[topixx]

im tryin to setup a wireless network adapter
when i type in the command below

sudo apt-get install ndiswrapper-common ndiswrapper-source linux-kernel-headers module-assistant
sudo module-assistant auto-install ndiswrapper

i get this response
reading packages done
building dependency tree done
E:couldnt find package ndiswrapper-common

steps i took to this point
i have loged in as su
i have changed directory/folder to where i extracted the ndiswrapper
still the same error, why does it look in E: for this info,i thougth drive C: was the main drive,anyway im using debian 3.1r2 sarge,my kernel image is 2.6.2.8-2-686 the version of ndiswrapper im using is 1.22rc2 .after lot of searching and different commands i think the ndiswrapper is my first obstacle and i cannot progress beyond this point,can you advise thanks
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[Zelmo]

It's not looking in E: for ndiswrapper; there is no E:, nor is there a C:. The E: means it's telling you about an error.

If you have Synaptic, open that up and do a search for ndiswrapper and see if something like ndiswrapper-common (or something equally useful) comes up in the results. Alternatively, if you don't have Synaptic or don't want to use it, you can get the same thing this way:

# apt-cache search ndiswrapper

Oh, and make sure your apt repositories are pointing to a good Debian mirror, not the install CD.

[topixx]

i couldnt do the command you suggested,as i cant login,
when i type my username and pword it keeps goin back to the same login screen,so when i sort this out i can try the code you sent tanx much