Office at home or at work? If at work, then you do have a problem-first he isn't working, but playing solitare. Second, he isn't working and checking out some naughty pics.
At home? Depends on how you feel regarding him looking at these types of things. Does it bother you? If so, tell him. Don't tell him in a nagging/blaming sort of way, just be calm, rational, and upfront. Men don't usually pick up on "clues" and whatnot, so be straightforward. Tell him you dont like it, how it makes you feel (the short version-not the detailed version unless he asks for more because if you go into a long speech about it, he will just tune you out) and ask him not to do it.
But actually, from what you are describing, that doesn't even sound like *real* porn. I don't even know if that can be considered softcore....And it actually sounds like a shopping website. maybe he was going to buy you some lingerie and surprise you?????
If you don't mind him looking at this stuff, as one of my guy friends always said....you can get a lot of knowledge about a guy's sexual fantasies/preference/likes from looking at his computer history. I like how other people suggested that you get lingerie as well....Use this to your advantage. Heck, he may just be embarrassed to ask you about "spicing" up the sex life with even just simple lingerie. I know my fiancee loves lingerie for several reasons, and one of the main ones is because it shows the effort I put into looking good for him. I am doing something especially for HIM. Drives him nuts.....and then he does extra special things for me in return. :o)