Since we are using a Translated Korean Client, you might be able to see small fonts which are not clear to see and are too small. Hence to view bigger and clear fonts, follow this simple guide.
* Start - > Control Panel
* In Control Panel go to Time, Date, Language and Regional options
* Click on Regional and Language Options
* Click on the Advanced Tab
* Select "Korean" from the Drop Down list. The screen should look like this:-

Once done, it might ask you for the Windows XP Disc. Please insert the Disc and follow the instructions.
Restart your computer and start the Game. Now you can see much clear fonts. If you experience bad fonts in other Applications, just restore it back to English.