Big Problems with the Serial Port

I'm Spanish and my English is not very good, I'm sorry but I need your help.
I want to connect two computers (my desktop and my handbook) with the serial port (COM2 in both sides).
I have the cable.
I have installed JBuilder 7 in both computers.
I have installed "commapi"
I'm running SimpleWrite.java (the example from Sun) in one of them and SimpleRead.java in the other.
I don't get in any moment receive any data.
I execute first SimpleRead and I can see what this process is waiting something. After, I execute SimpleWrite (many times), this process star and stop correctly but never the first aplication receives nothing.
I am trying for four days, I am desespereted.
I need your help is very important to me. I don't understand what is happening!!!!. This is my e-mail: [email protected]
Thank you very much.
NOTE: my handbook has just one serial port, before had a winmodem but it was eliminated.

hi,
when your notebook has only one port, how do u know that this port is COM2? I think u gave a wrong parameter for the SimpleReader or SimpleWriter so one send data to a port (say COM1) but the other receives data from another port (say COM2).
regards,
eedych

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[UPDATE] I downloaded "USB Prober" and copied the Output file, maybe it helps:
Timestamp Lvl            Message
    0.698 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7316), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.698 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
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    0.735 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.739 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.739 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.761 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7320), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.761 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
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    0.801 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.823 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7324), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.823 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.860 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.860 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe - noting status change
    0.860 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.863 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.863 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.885 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7328), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.885 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.922 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.922 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe - noting status change
    0.922 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.926 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.926 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.947 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7332), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.947 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
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    0.984 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe - noting status change
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    0.987 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
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    1.009 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
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    1.045 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe - noting status change
    1.045 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    1.049 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    1.049 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    1.071 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7340), outstandingIO(0), _interruptReadPending(false) - rearming read

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