For more information about reading Hangul on computer see:
http://www.erols.com/sang/hangul.htm
Some companies that deal with software for viewing and writing asian languages are Unionway, NJstar and Twinbridge. Unionway is reccomended for software to write Korean.
If you want to be able to read and write Korean, Japanese and/or Chinese on-line and in e-mails the best solution, and the one I use at home, is Microsoft's international support 'Global IME' this can be downloaded completely FREE, and simply. It works alongside your browser(and Office 2000), as long as you have Internet Explorer 4 or greater. You have to be using Windows, too. With the Global IME you can also choose to download a so-called 'language pack' this is the software the allows you to view Korean. A full explanation and links for download is given here on Microsoft If you don't have Internet Explorer 4 or greater, The latest internet Explorer can be downloaded from here and you can choose to have the Korean reading and writing setup automatically downloaded with the new browser.
However if you are in a hurry to read and write Korean I recommend the following:
Download page:
http://www.NJSTAR.com/communicator/download.htm
30 DAY trial version
US download site:
ftp://ftp.simtel.net/pub/simtelnet/win95/inet/njcom210.zip
OR:
UK download site:
ftp://sunsite.doc.ic.ac.uk/packages/simtelnet/win95/inet/njcom210.zip
Then, download WINZIP to unpackage the file 'njcom210.zip' here:
ftp://ftp.download.com/pub/winnt/utilities/winzip70.exe
double click on WINZIP when you have downloaded it, then just follow
on screen instructions.
sometimes necessary to to to 'NJconv' (in the NJStar communicator directory)
and convert 'unicode' to KSC
Korean encoding in order to be able to read hangul.
See the NJstar homepage for more information.