Edit: April 26, 2004: Dyluck pretends to be a newbie, writes a poem to assure he's not, and says hi.
Edit: Sept 01, 2004: Added installation instructions and manual for "Legends Of Illarion" to first page of this thread.
MS Gothic Font is needed to play the game, unless you want to play with a screwy looking font. Download it here if you don't already have it:
(Put it in the /Fonts/ subdirectory of your Windows dir) You may have to reboot afterwards, but maybe not.
1.Download the zip file and unzip all the files to a folder (You might get some message about long names, but I don't think it matters). Double click the setup.exe file that you get from the zip file.
2. Select the folder to install the game to. I think it might be best to keep it in the same folder. Two additional options that can be selected are create start menu shortcut and add uninstaller. Click [Begin] and the installation will start.
3. Begin playing by using the menu shortcut or the RPG_RT.exe in the folder you installed it to.
4. Enjoy the game.
Oh yeah, and you download everything at your own risk, etc etc.
(Up) > Up arrow key, [K] 
(Down) > Down arrow key, [J] 
(Left) > Left arrow key, [H] 
(Right) > Right arrow key, [L] 
(Decision Key) Talk/examine/select > [Enter] [Space] [Z]
(Cancel Key) Open/Close menu, cancel > [Esc] [X] [C] [V] (B) [N]
Note: Numbers refer to keypad
[F4]: Toggles between full screen and window mode.
[F5]: Toggles between normal size and double size in window mode. Sometimes, if the game is slowing down, toggling to normal size or vise versa may help.
[F12]: Returns to the title screen.
By the way, you can usually save anywhere.
Not exactly spoilers, but maybe you just want to figure
out every little function on your own? If so, don't read on.
There's also one important piece of advice at the end, but if you're feeling confident, then just ignore it.
Edit: I've blackened out the text, so highlight it if you want to read it.
Basic Battle Commands
Fight: Attacks with weapon
Defend: Damage taken is halved for duration
Item: Use Item
Escape: Attempt to escape from battle
Some Special Commands (with not so obvious uses)
Invoke Chi: Use Chi skills. Hit rate is not 100%
Archery: Uses skills from arrows possesed in inventory
Might: Attack with doubled power, but halves defenses for a while
Disinhibit: Changes stats for the battle, but lose control of character
Final piece of advice:
Some of the functions of the moves under "Conquer" may not be obvious at first, but you'd better figure them out quickly if you want to live.