Max Jitter input for NewBeee

Hi. Right now not I am NOT a happy camper with Linux/CNC ,been doing a-lot of reading and Youtube looking but more I get lost with the Max Jitter setting so CNC will start up .How do I fix/reset the setting for it to run right ???
Laptop Dell D620 1.6GHZ, 4GB memory HD 60GB
OS LinuxCNC 2.7 from live CD updated to 2.8 -- screen saver off and power saving off , no battery, running on AC - so its real time running
Thank You.
Rint file information:
RUN_IN_PLACE=no
LINUXCNC_DIR=
LINUXCNC_BIN_DIR=/usr/bin
LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc
LINUXCNC_SCRIPT_DIR=
LINUXCNC_RTLIB_DIR=/usr/realtime-3.4-9-rtai-686-pae/modules/linuxcnc
LINUXCNC_CONFIG_DIR=
LINUXCNC_LANG_DIR=/usr/share/linuxcnc/tcl/msgs
INIVAR=inivar
HALCMD=halcmd
LINUXCNC_EMCSH=/usr/bin/wish8.5
LINUXCNC - 2.7.8
Machine configuration directory is '/home/none/linuxcnc/configs/my-mill_test1'
Machine configuration file is 'my-mill_test1.ini'
INIFILE=/home/none/linuxcnc/configs/my-mill_test1/my-mill_test1.ini
PARAMETER_FILE=linuxcnc.var
TASK=milltask
HALUI=
DISPLAY=axis
Starting LinuxCNC...
Starting LinuxCNC server program: linuxcncsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting LinuxCNC IO program: io
Found file(REL): ./my-mill_test1.hal
Shutting down and cleaning up LinuxCNC...
Killing task linuxcncsvr, PID=4121
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments

Debug file information:
.
Error: could not insert module /usr/realtime-3.4-9-rtai-686-pae/modules/linuxcnc/hal_parport.ko: No such device
./my-mill_test1.hal:6: exit value: 1
./my-mill_test1.hal:6: insmod for hal_parport failed, returned -1
See the output of 'dmesg' for more information.
4121
PID TTY

Thank You for the info . Question I have no parallel port on the Laptop D620 Dell so am I Shit out of luck to use this Dell to control a CNC Router with USB Arduino UNO Org and TB6600 driver for the stepper motor ?

Wow LinuxCNC no support for USB - I did not know that, sounds like old school in a way . I am just starting out . Right now I have all the parts order to build a DIY OpenBuilds OX clone, table 18"x30" - spindle I will use a router 3.5amp - a control pin to turn relay on/off. Most of my work will be with wood as I go along for now .
I may need to rethink all of this --- maybe look into a someone selling a older mach 3 license, maybe cheeper and EZer instead of buying a old PC and a different controller board and finding out the older PC has issues , bad HD ,capacitor going south in the power supply and so on .

It has less to do with being old, and more to do with being reliable. Unfortunately communication with a USB connected device can be delayed, by a large (relative to what Linuxcnc needs) and unpredictable amount of time. Some viable options for connecting machinery to Linuxcnc are, the lowly parallel port, PCI and PCIe adapter cards, and real time Ethernet. The parallel port is just one cheap and easy way to get reliable real time digital oi.

I like to Thank everyone for all the info .Right now I am go to with Arduino UNO . I did find some other controller programs ,one was from engineeringforless.com ... After all I am a Newbee to all this so I need to start off low cost and build up from that point if all goes well .
I do Thank You All for Your Time on this .