After much frustration I have developed a repeatable method for transferring files to and from my LG290C Tracfone and my OS X Leopard MacBook. The procedure is as follows:
From the main screen go to Menu>Settings>Bluetooth>Power>Off>OK. Press End to return to the main screen. Dial ##7764726290 and press send. Enter 000000 press OK. Scroll down to Bluetooth Setting and press OK. FTP Server is highlighted press OK. Yes is highlighted press OK. Highlight On and press OK (NOTE: Even if there is a check mark next to On already select it again. You will have to do this every time you want to transfer files). Set down your phone near your computer.
In OS X go to the Bluetooth Menu>Set Up Bluetooth Device. Follow the instructions and complete this procedure. You will then have LG290C in your Bluetooth menu (NOTE: do not try Send File... or Browse Device...!). Next go to www.binarynights.com , download Forklift and copy it to your Applications folder. Open Forklift. Click OK to use the 15 day trial version. Click Connect. Highlight LG290C and click Connect. Double click either Phone_My_Audios or Phone_My_Images. Drag from Forklift to the Desktop to transfer a file to your computer. Drag from the Desktop to Forklift to copy a file to your phone.
In this manner I have been able to transfer jpg files which can be viewed on the phone. I have been able to transfer MP3 files which can be set as ringtones. I even transfered an animated gif which could be set as a wallpaper. I can also transfer 1.3 megapixel images taken with the camera from the phone to my computer.
I have tried using Boot Camp to start up in Windows XP and find some comparable method but had driver issues. The first paragraph of my procedure should help someone else to find a method in Windows. If you do please post. Also if you know of any other uses for the service menu please post.