Ubuntu Networking :: Xubuntu/Lubuntu: Wireless Works On One But Not The Others

So, I tried reviving my old windows laptop by installing Ubuntu on it, but it turned out to be too heavy for it, so i turned towards Lubuntu and Xubuntu.

Now, for the couple of days I used Ubuntu, until i decided it's moving too slow and I should go for a lighter version, my USB wireless adapter (and the touchpad, but that's a subject for another subforum) worked fine.
When I installed Lubuntu and Xubuntu, it stopped working. I tried using network-manager and wicd to make my adapter scan for wireless networks, but it's like the USB isn't even there. When I pulled it out and stuck it on my main PC (that is running Ubuntu), it was discovered immediately and connected to my router. But I can't do it on either Xubuntu or Lubuntu.

PS: If anyone has a quick hint about why my touchpad is working during the installation of Xubuntu, but not after it's complete and loads the desktop, I'll make a new post in the relevent section. A USB mouse works fine everywhere, but a touchpad isn't moving the pointer.