Enhancing Ovation Gtr Sound In Digi001, Gtr sounds tinny and signal levels vary Options

[Tone]

Being VERY new to VST/Audio Recording I would firstly congratulate you on a helpful and informative forum. I am using the Digi001-MacG4/733-Korg Triton Le MWS at home in Shanghai. The budget is all but gone. Although the overall reults are satisfying I still cannot get a decent sound using my Ovation. The signals vary and the sound is tinny and unnatural no matter how much I adjust the controls on the plug-ins that came with the 001 (Delay etc). Is there an 'alternative' to further purchases of costly equipment to get some realistic gtr sounds into the songs - accoustic chord/rhythm as well as lead?. (As a Brit Expat the local options are impossible to track down).
Thanks again
Tony