wifi connecting thru extender

[urirx98]

Hi, just got a MOTO XOOM and i have set up my wifi network. I currently have a extender connected to my router wirelessly and I am having problems connecting. I can connect directly to my router ( which is upstairs) but I cant get the XOOM to connect to the router ( which is downstairs) . I do currently have my laptop connected thru the extender, and it works great. ANyone else have any connection issues with a extender. This seems to extend out to more then the XOOM cause i have a Vizio tablet and same thing, it shows the extender when it searches for WIFI but it wont connect, just says obtaining IP then connects directly to the Router. Please any info would help. thanks