These definitions may help...
A Neurologist studies the nervous system and the diseases thereof. This study has absolutely nothing to do with creating drugs.
A Biochemist usually researches things like protiens and metabolism and DNA (boring, IMO). I guess there is a bridge between this profession and the ones below.
A Pharmacologist researches the effects of chemicals that have already been made on animals. Of course, a neuropharmacologist specializes in studying drugs that effect the nervous system. This is where a focus on Biology will likely take you. Someone who is strictly a pharmacologist is not allowed to synthesize drugs or operate a pharmacy, as far as I know.
A Pharmacy Technician is a pharamcist's bitch (see below). :D
A Pharmacist, by most definitions, is someone who has the knowledge of a pharmacologist but is licensed to operate a pharmacy, order and dispense drugs...etc. Note that in my part of the world (canada), a degree in "pharmacy" also implies certification in medical chemistry (see below).
A "Medical Chemist" (as is called in some places) is a chemist (usually organic, see below) who specifically engineers chemicals to be researched by, and based on research already done by, pharmacologists.
An Organic Chemist/Engineer is someone who synthesizes organic compounds. If none of the above is appealing or available, this is probably the most straightforward route to synthesizing drugs legitimately.
Here in canada, the closest University s the University of Toronto, which offers a degree in "Pharmacy" whose graduates are called "pharmacists" (by the definition above) and who have training as both pharmacologists and medical chemists.