Timeout error during import database means you have too large file for your settings from configuration files. If you have this problem, you probably saw this message:
Script timeout passed, if you want to finish import, please resubmit same file and import will resume
So what next? Size of your backup you propably cant't change, but config parameters - surely yes.
Not many people know that in Windows is available partitioning program called Disk Management. If you want to create, delete, resize, format or change drive letter, it is possible without any additional software. So, where to find Disk Management?
After installing 64-bit version of Slackware Linux, we have ready distribution for running 64 bit applications (obvious!). But there may be some problems with 32-bit software. Installing multilib package can solve this problem. This step should be one of the first operation after install Slackware64.