Palm on Multiple Computers

I Hotsync my Sony Clie SJ-22 Palm OS v.4.1 with my desktop computer Win 2K Pro. However, I primarily use my WinXP Pro laptop and I installed the s/w hoping to access the data on the desktop. I do not want to sync with my laptop (conflict of downloading mail on multiple computers). Therefore, how can I access, add, delete, modify the Palm Desktop information on my desktop computer from my laptop computer?