My 97 didn't have an alarm or remote locking either, if it's not in your options you probably don't have it.
I added both an alarm and keyless entry using a cheap (~$20) unit from eBay following this thread and it works a charm...
3rd Party Keyless Entry DIY (Why Not?)
Only downsides are the alarm is motion and door only (doesn't use the fancy IR sensors so won't spot someone reaching in when the top is down), and having to carry an additional fob instead of it being built into the key.