Which version are you using?
It sounds like you are using v0.2 if I am not mistaken.
By...
I currently am running a server, and everytime i restart WSV Scripts it deletes all info, like !addprop.
do you mean that the pickups do not show up?
If that is the case, type /WSV.autoloadpickup into your mirc window.
It should work...
Whatever the case is...
You need to press ctrl+r to access the scripts editor in your mIRC client.
Then you need to edit the variables that are there.
for example,
%serverip
%rconport
%rconpass
To make a race, you first need to set up race locations wish !saveraceloc
Then you do something like...
!makerace sunshine army 10000
to start a race.
Hope this helps.