There is very little price difference between IDE and SATA optical drives now and you can buy a quality-brand re-writer for less than £25, probably under $45 in the USA. Although converters are available, there isn't much benefit to a converter, cost-wise.

Whilst I appreciate that it might be a bit of a financial problem for you if you are a youngster, it's clear that you can't continue struggling along without an optical drive. Sadly, you will just have to reconcile yourself to the fact that your IDE drives are redundant now and take it from there. You need a SATA drive, so redirect your energies towards that goal.