No need to shout (caps)
It would have really helped if we knew what version of LW you're using.
If you're using LW 4 go tools > options > sharing. There, you'll see which folders are being shared. Untick the box beside folders that you don't want to share > apply > ok.
And if you don't want to share downloaded files that are saved to an unshared folder, untick that box > apply > ok.
Also check to see whether partial file sharing's enabled. Tools > options > sharing > advanced.
If partial file sharing's enabled then you'll be sharing files as you download them - before the download's complete. Untick the box if you don't want to share partial files > apply > ok.
If you're using LW 5 then check out the threads below for advice about unsharing files & folders.
LimeWire 5.0 - Adding folders to library, sharing/unsharing files, removing folders - Windows. LW 5.1 Adding folders to library, sharing/unsharing files, removing folders - Windows.
To turn off partial file sharing in LW 5, go tools > options > downloads. Untick the box to share files downloaded from the P2P network with the P2P network > ok. This will disable partial file sharing but it'll also mean that you'll need to go into P2P Network in LW's sidebar if you want to share those newly downloaded files with other people.
Having UP capabilities enabled shouldn't effect what you're sharing.
If changing things within LW's options doesn't help, delete LW's preferences folder when LW's properly
closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire LimeWire Pref Folder in Vista
This will change all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.
After you've deleted the prefs folder & restart LW, you'll need to go through LW's setup wizard again. When you do, pay careful attention to which folders are shared by default - there'll be a page in the setup wizard that shows this info. There, you can choose which folders that you want to share. And double check which folders are being shared when you reset LW's options to your own preferences