BleepingComputer.com: Problems accessing various websites

Hi everyone, new to the forum, 1st post.

I have recently bought a new wireless router and installed it and the majority of hte time it works fine. Ever since the new one was installed i have been having problems accessing some websites and images wont load up on others, for example when i go on IMDB all the images for actors pics etc just have the white box with a red X.

i am using windows vista home premium service pack 1, its a brand new PC i only bought in october. the make of the wireless router is Safecom.

i can log onto my neighbours internet and it is able to get onto the websites i cant access form my own but the connection is slow because of the distance.

any suggestions are welcome, thanks for your time!!