4-4-4-12 is decent timings butthis still isn't what's causing your issue.
Whenever you scroll or do anything like this, all the data for the page is stored in memory and scrolling puts a strain on this...you need more physical RAM. You have the bare minimum for Basic so dragging windows, scrolling and anything that will make the data reload into memory numerous times in quick succession will cause you stutter issues, especially when you have another high memory usage program like WMP going also.
You need a minimum 1G but I recommend 2G's. RAM is also cheaper now than it's ever been before but do not skimp out on "No Name" stuff. The cheepey RAM uses a less reliable memory chip and less grounding layers than the JEDEC requirements, that's why it's cheaper and that's why many times it'll go bad quickly or not work at all.
Stick with name brand, Crucial, Corsair, Kingston, OCZ...etc and you'll always get JEDEC compliant RAM with top line chips, no seconds or factory rejects on these ones. You can get 1G sticks of name brand RAM for well under $40 these days on Ebay and 2G kits for under $70.