1997 Eddie Bower Explorer bypass

How small is the key? Try having a regular key cut for you at a hardware store.  If it starts your car then you do not have to worry about anything.  Since you have an "anti-theft" light on your dash, that means you either have PATS or had it and someone permanently bypassed it. If you don't want to have a key made to test, just install the remote starter, then try and start it without the key near the ignition.  If it starts then your done, if it doesnt, then try putting the key in the ignition but dont turn it, and try to start it remotely.   Just a helpful hint for if you decide to pull off the shround to bypass the PATS, there is usually a hole in the bottom of the shroud that you can use a long narrow object to push up the pellet that locks the key cylinder in place. You have to have the key in and turned to either accessory or run for it to work.  Usually you need to do this to get the shroud off and it also allows you do leave the tilt lever in place, which can be a pain to screw off. 

You can use this No Key Required module on the 99's.  I have never used these but I hear they work.  Or you just use the universal bypass which doesn't require tapping any factory wires, but you have to properly position a coil around the key cylinder and put an extra programmed key in the bypass module that will simulate the key being in the ignition. You have to make an extra key  by taking both the keys to the dealer.  $16 with both, and if you only have 1 keyy it is around $65.

http://www.bypasskit.com/pkf.asp?cid=12