Inserting pictures in PDF Forms (alternatively how to get livecycle)?

Hi,

for my work place we are making forms to document information for all the chemicals we have. I need lots of text fields (easily done) and a field where people can copy in or insert an image of the chemical formula of the large molecules. I have to assume they have reader and not acrobat so this needs to work for most versions. I thought this was going to be so easy. I made a perfect form in word (fillable, lockable, everything I need) in three hours. But word obviously doesn't look as professional as a fillable pdf document so I downloaded adobe acrobat (30 day trial) to make this. For ages I thought I was just too stupid to find the insert image/mix field in the forms section. Surely such a proper (and usually payed) program specifically advertised for making forms would allow more freedom than just text and numbers. After now searching the internet for days I have found people talking about inserting something javascripty (didnt work for me but possibly I did it wrong), and about using livecycle. I spent another long time trying to figure out what it is and whether I've got this livecycle or not because some sites claimed it comes automatically with the free trial adobe acrobat download. I do not. Can I download it as a trial somewhere (I've looked, but haven't found)? I just need it for this one day thing.

Before I peg Adobe Acrobat down to being essentially useless for my task and wasting hours of my time, did I miss anything? Is there a normal way to do it? It's really nothing special; just a picture.

Thank you very much

Leila