Because you are on a netbook I am assuming you don't have a CD-ROM drive and probably don't have a way to connect a 2.5" HDD... You will need a spare USB Thumb Drive but this should work best...
Download UNetbootin and run it select Ubuntu as the Distribution then set Type to USB Drive and select your USB Drive Letter. Make SURE it is the correct drive letter
Set your BIOS to boot off of Removable Media and boot up the Ubuntu Live Desktop. After it is completely loaded open up Firefox and head to Truecrypt.org and download the standard linux version unpack it and run the truecrypt-7.0a-setup-x86 file. At a terminal you should be able to type ./truecrypt-7.0a-setup-x86 but I am pretty sure you can just double click it and it will install.
After it is installed start it from either the drop down start menu or at a terminal run "truecrypt".. click "Select Device" and locate the main system drive then click the "System" menu and select "Mount without pre-boot authentication..." enter the password and the drive should be mounted under "/media/truecrypt1"
From here you can either copy the information off of the drive or you can try to reset the password using a Linux utility... I have not tried any from within Ubuntu but I know it can be done one that I came across just googling is called "chntpw"
Just going by the simple instructions you open a terminal and execute "sudo apt-get install chntpw" and run the command "chntpw -u USERNAME SAM" and it should ask you for what password you want. You could also type "man chntpw" for more information. I am sure there are a ton of other utilities available but you have google just the same as I do :)