OK , you don't have a GEM or Fork which is RA driven , but you still want to try your hand at astrophotography and you've done the star trails thing ....
Not everyone has the readies to buy a nice GEM , so what are the options :
1) build your own GEM or fork and get hold of a secondhand RA wormwheel set and a motor to drive it (hard to find useful secondhand RA drive systems)
2) build a barn door tracker , might be easier to get parts.
Here's how to do it :
http://www.astronomyboy.com/barndoor/