from what i've seen so far on forums the only time you can ever upload a pic is in the post its self...in all of the ones i've been on you've had to host the image for you're sig even if you can upload them in you're posts...but it could be simply becase of the type of forum this is because it might not support uploading or tmy just hasn't wanted to download and install the hack/mod that lets you upload pics
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