Need help with scripts.

Ok so im completply new to all this ;P. So lets say i want to use this script.

_classname = MH6J_EP1;


//return combos of first 5 chars
fn_genStrFront =
{
_array = toArray (_this select 0);
_count = (_this select 1) - 1;
_max = (count _array) - 1;
_Num = [];
for '_i' from 0 to _count do
{
if !(_i > _max) then {_Num = _Num + [_array select _i];};
};
_firstNum = toString _Num;
_firstNum
};

//return combos of last 5 chars
fn_genStrBack =
{
_array = toArray (_this select 0);
_count = (_this select 1) - 1;
_max = (count _array) - 1;
_Num = [];
for '_i' from 0 to _count do
{
if !((_max - (_count - _i)) > _max) then {_Num = _Num + [_array select (_max - (_count - _i))];};
};
_firstNum = toString _Num;
_firstNum
};

//list of kickable strings from createvehicle.txt
kickable = ["SEAGULL","BOX","MINE","SADARM_","LASER_","WP_","_ MLRS","_81","_82","_105","_120","_122","_227","_AA ","_AT",
"_AP","_80","_57","_85","_100","_125","_30","_IED" ,"_CRV7","_MEEWS","_SMAW","_GRAD","_SABOT","_SH"," KORD","DSHKM","MK19",
"AGS","NEST_","R_PG","R_OG","B_","_YAKB","COCK","P ARACHUTE","LAND_","BBARRACKS","_LHD_","_ACR","MASH _","FORT_","BASICWEAPONS","SPECIALWEAPONS","_UA V"];

//return all possible combinations from _classname
possible = [];
for '_i' from 2 to 6 do
{
_charFront = [_classname,_i] call fn_genStrFront;
_charBack = [_classname,_i] call fn_genStrBack;
possible = possible + [toUpper (_charFront)];
possible = possible + [toUpper (_charBack)];
};

stop = false;
//check if any possible outcomes match a kickable outcome, if true then abort script
{
if (_x in kickable) exitWith {hint ("ERROR: CHARS\n\n'"+_x+"'\n\nIN CLASSNAME\n\n'"+_classname+"'\n\nWILL KICK"); stop = true;};
} forEach possible;

waitUntil {!(stop)};
hint ("Classname "+_classname+" is OK: Preparing to spawn!");
/*=Scanning Done]==*/

/ goodbye exploding car
allunits = [];
publicVariable "allunits";

sleep 0.5;
_dir = getDir player - 90;
_location = player modelToWorld [0,6,0]; //2lazy2doTrig

//whitelist exploit tiem
_object = createVehicle [_classname, _location, [], 0, "CAN_COLLIDE"];

hint ('Spawning:\n'+_classname);

_tent = _object;
_tent setdir _dir;
_tent setpos _location;
player reveal _tent;




Yeah, so i open it in notepad. What would i then save it as? SQF? And how would i run it?
Would i need any bypass? And how does bypass' work? ;P
Also i saw a hack that wanted me to inject a SQF file, i have no idea how to do this without a injector :P

Any help would be apreciated, im a noob.