How do I change the style of the subtitles?

[Isakksson]

Hi!

I recently reinstallde my computer. I saved the Ps3 Media Server map and it worked just as before.
The only problem im having is that the subtitles have changed style and I dont like it.

Now it looks like this:

I dont like it when the "border" is so thick, I want it to be thiner, like this (VLC Playback).


How do I changed the subtitles so the border is thiner?
Im using Windows 7 64-Bit and PS3 Media Server 1.50.0.

Thanks in advance!