Serial communication ans mini 2440

Hi Guys, 
        I am new to the whole mini2440, embedded linux thing. Is the only
way to change the OS or do anything in NANd or NOR flash with the RS232
cable? As I no longer have a computer with serial ports.
I would like to try other OS' and experiment more, but can't seem to get
anywhere.
Or is there a USB -> serial adaptor that would work with newer laptops
running Fedora 14?

Also, when I log in with User=plg and Pass=plg, I can only do limited
things, I cannot create directories in certain places.
Is there a root account that has unlimited power?

Thanks Chris.

I use a rs-usb converter base on the FT232R chipset. It's supported under
linux - just plug ang play. You can find it on ebay for example.

My mini2440 have a mini usb-serial adapter soldered on con1 so I can use a
mini usb cable for the serial console.
much easier than the big RS232 serial to usb adapter.


board ref:
http://www.sparkfun.com/products/8531

Have you tried not logging in? On mine with the factory Linux, press return
and I'm root.

mini6410 not connecting with dnw

You should start a new thread or add your question to an existing
mini6410/DNW thread.

Then describe what you have done, so far.