scanning windows photo gallery

Hello,
1st off, can someone tell me where is the official bug reporting site/system is?
I have a Canon MP730 multifunction and would like to scan some pictures at 300 - 600 dpi. Windows photo gallery can only do it at one dpi even though there is the option to increase. So my old pictures are being imported at very small sizes, much too small to see any detail.
I ended up using Picasa, which does the scanning at 300 dpi (for real).
Any ideas?
Thanks!