well, yes and no. it only works one way, which is in receiving. and, if it is for internet, which i will guess it is, you will need to put one of these on both your wifi modem,and the ds, because the ds can only transmit as for as it can receive! what you need, is a receiver amplifier!, which basically is a super sensitive transceiver which receives whatever your ds should be receiving, at ranges further than the ds can receive, then retransmitts it, right in front of the ds, if you choose to attach it that is. essentialy, it will receive feint signals and resend them at normal strength again, potentially only doubling the wifi range. unfotunately, i dont know the proper name for one of these, if there is a differnet name for one. anyway, when i said youll need two, thats because if you want to use it with another ds, the other ds will need one also, because its receiving and transmition range wont go up, fortunately, these things cost very little. find out the ds's wifi frequency, and get the according receiver signal booster, sometimes ones with wide spectrums (50hmz-1000mhz), known as antenna boosters, should have frequencies that fall under the ds's range, and im fairly certain that there are alot also which operate around the 2.4ghz range. and i am definative that the ds either operates at 433mhz or 2.4ghz . in theory this should work, but first consult others, ive never done this for anything other than a 433mhz fireworks detonator receiver, which uses an encoded on off signal.