How do I install .jar files onto a Nokia N95 8GB phone??

Send them via the software suite, the phone will then ask if you want to install from there

I cant use PC Suite as as im installing it it goes to 23% and then my PC reboots itself so is there any other way of doing this??

I just transfer the files via anyway you seem good and save them to the other folder, I then use the file browser built into the Symbian OS and load the file, it should just install.

I load the jar file onto thephone but cant find it to install!!

If you've forgotten which folder you put it in. You can either do a search in Windows, or just transfer it again and make a note of where you put it.