I've never seen a set up file like this one, would someone mind enlightening me on what I'm supposed to type at the prompt?

hmm.....here we go:

language:
0 english (and so on)

simply type the number besides the language you wish to use (if this options pops up).

when it asks you if you wish to install the mod, type y for yes

when it asks you the second question, just type "n" for no and your good to go.

its quite simple

No, I think you misunderstand. I'm not getting that sort of setup menu. What I'm getting is a bizaar listing of possible commands and then a prompt.

I've been looking forward to playing an overpowered magical character. Unfortunately it doesnt want to install it here either.
Might be best if i type it all out so here it is:

[SETUP-DRUDICSORCERERKIT.TP2] PARSE ERROR at line 1817 column 1-14
Near Text: ADD_PROJECTILE
syntax error

[SETUP-DRUIDICSORCERERKIT.TP2] ERROR at line 1817 column 1-14
Near Text: ADD_PROJECTILE
Parsing.Parse_error
ERROR: parsing [SETUP-DRUIDICSORCERERKIT.TP2]: Parsing.Parse_error
ERROR: problem parsing TP file [SETUP-DRUIDICSORCERERKIT.TP2]: Parsing.Parse_error

ERROR: Parsing.Parse_error

Press enter to exit


As you can see some parse error. *shrugs*
Seems this ADD_PROJECTILE has been added in 1.4 version, so it might work with earlier versions.
In what program could i open this?

Hlid used a command in the installation which was not supported by the version of WeiDU that was packaged with it. Download the latest version of WeiDU from weidu.org (http://www.weidu.org). Inside, you'll find a prgram called weidu.exe; just rename it SETUP-DRUIDICSORCERERKIT.exe and replace the one that came with the mod.

Thanks! worked like a charm!