I suddenly missed the game called "Fantasy Tennis" which was closed for a long time.
What I want to do is to extract the game item's icon, but I have many problems with it.
First, I can extract until I found many .tex and .dat files in MESH or ITEM.res folder. (the example is below)

For .tex file, I tried using specific program posted in one webboard that can convert .tex to .bmp, but what I got is this

It's kind of like an icon that I want but extended and full of unwanted line.
and for .dat files, I can't even open them. (When I opened with notepad, it showed me alien wording)
Can anyone help me with this?
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PS. Here is the link to download the file and program that I used.
https://drive.google.com/open?id=1gdnge ... XXgxwff5YN