I have a 42' Sharp Plasma TV that I want to hook up my Logitech X-530 Computer Surround sound up to can you help me please

SOURCE: Connecting Logitech X-530 speakers to TV flatscreen.

It really depends on what the Tv is capable of, and how you want to strategize the connection, but yes, it can be done.

According to the X-530 User Manual , the speaker system comes with an included video game adapter, for hookup with a console. if your LCD TV has stereo RCA output jacks, you could hook up your speakers to it in that fashion. If not, you may have to buy an adapter that converts whatever you have to RCA.

Another way you could attempt to connect it, is to buy a stereo RCA-to-3.5mm (g9) adapter, and connect to your computer's line in (if it's stereo). Your computer would be doing all the speaker sound positioning, and would have to be left on while you're watching TV, but that would work, as well.

SOURCE: manual

Here is the installation page, http://www.devhardware.com/c/a/PC-Speakers/Logitech-X530-Speaker-System-Review/2/ it isn't the offical one but I think you will find it usefull all the same!
Good Luck,
Chris

SOURCE: Logitech x540 speakers- rear speakers distorted on matrix mode

I installed my soundcard which is the sound blaster SE audigy but when i try to test the sound i see that it does not sound separately.What i have to do to make them sound saperately when i'm testing it ?

SOURCE: logitech x 540 speakers wont detect on my pc (dell inspiron 530)

Here is the DELL support page for your computer and the logitech drivers and software needed.
http://support.dell.com/support/downloads/driverslist.aspx?c=us&l=en&s=gen&ServiceTag=&SystemID=INSP_DSKTP_D530&os=WLH&osl=en&catid=&impid=

SOURCE: hooking up logitech surround sound to tv.

you need a "y" cable to bridge the output of the tv to the speakers.

Godd Luck