*.jar extension files on LG VX9800

Hello. I bet I've made a post before, but I'll do it again. However, I just want to comment my concerns/questions, as shown below:

1) I own the LG VX9800 (SW version 2)
2) I own the 1 GB miniSD card
3) I know what "The V" does, so I won't go there, BUT... here's what I'm concerned with: After downloading some JAR (*.jar) files, is it possible to upload them to the miniSD card reader and then run it on my phone? If so, how? I've already uploaded them to the phone but it doesn't either read the files or it doesn't do anything. BTW, I don't have Internet/data plan on my phone, but only for text messages.

How can I be able to have my phone be able to read *.jar files so I can safely use them? Help? Can anyone point me into the right direction? Thank you!

CellFreak64