Hello everyone

I strongly need some help. I have just bought a keytar Korg RK 100 S . I havealready had a synthesizer Casio CTK7000 and thought that Korg would help me with playing guitar-sound like.
But as I unpacked the box and examined 196 musical samples I opened a terrible truth that there is no quitar sounds, not only distortion guitar but even simple one...
I have tried the official website but found no samples for keytars and a lot of samples for synthesizers...
I have downloaded Korg Sound Editor and plugged my Keytar to pc. This software can change the samples but I do not know which one will be proper for making guitar-like sounds...
Is there something I can do ? For example my Casio synthesizer has more then 30 quitar sounds so I was very upset that Korg has none...
I only hope for some advice because if nothing can be done I will return the Korg to the shop tomorrow...
Yours sincerely,
Vladimir
Ps sorry for errors, english is not native for me