Your internet service provider should have given you some free webspace when you signed up ( anything between 30 and 80mb ) , try thier online help facility if they have one and find out how to upload your pics to your webspace ( your own web address ) then just do as above post says and upload your pics and link to your post .
In certain cases you may have build your own homepage with your providers software ( only takes about 20 minutes at most ) and upload your pics to your homepage and link from there .
Which galleries are you referring to? Clubsnap? or some other website? IF you are referring to other sites..they can offer you limited space for free but those that offer more space and better facilities will be charging you money for those space.
If you are referring to Clubsnap..that should not be that hard to upload some of your picturesto the site since you are already a memeber.