Install wine via "system --> Administration --> Synaptic Package Manager" or follow the instrucions on WineHQ.
Go to webshots.com and download your webshots to the desktop. Open it with wine and go through the next-next windows.
Install it in "C:\Program Files\Webshots\"
Go to "Applications --> Accessoires --> Text Editor" and paste the following code in it:
And save it.
echo "$1" > wbsht
sed -i -re 's/\//\\/g' wbsht
argument3=`echo -n $argument2
wine "C:\Program Files\Webshots\Launcher.exe" "$argument3"
Download your photos.
Go to Webshots.com and download your photo. Firefox asks you if you want to open it, or save it. Choos open ands click 'browse' and choose the script you've saved in step 3.
Download UWC here. And install it just like webshots.
Go (in UWC) to Conversion --> Batch conversion. Select '+folder' and choose '"My Documents --> Webshots Data".
Select a destination folder, and click let's convert!
Edit: Since an update webshots doesn't work anymore. Here is an workaround (run this in a terminal):
wget http://www.dll-files.com/dllindex/download.php?mfc42download0VMfWEdMdO -O mfc42.zip