My headphone slot won't work
so long as you are not plugging in a headset(mic/phones) into it. those have different connections on them which dont line up and short out. yours needs a 3 connector plug ie standard TRS 3.5mm stereo.
FOLDERS WONT SHOW UP ON PC.
It appears you have selected to play when inserted.
Go to my computer, right click your device, select open as a portable device. (so it can see the folder)
When the window on your desk opens select open folder.
It should open in this format from now on and you should be able to see the contents of your device.
However you failed to mention what operating system you are running so these instructions may not apply.
Also; You may have to pull those files/songs out of the folder and install them directly to your device (just as the new material is installed) because no auto-play can read a folder. This is probably is the best solution if you want the music to start playing when plugged in...
Music on mp3 player not aknowledged by computer
You are right about the Vista. The nextar was designed to work with up to XP. It wasn't designed for Vista at all. You could try getting Vista to treat it as an old OS by selecting the player, (and if Vista works anything like Windows 7) by right clicking on the mouse and select compatibility options. Or finding the option to do the same in Windows, if it doesn't come up in Vista. (Never used Vista so do not know it). Anyway then select the OS of your old computer for the compatibility.
Vista updates
I don't believe Microsoft are still providing updates for Vista. You should check as to when the last update was. Not the last check for updates. The "last" update.
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