Registered .com domain with wordpress.com and now want to move to www.ads-software.com

Hiya,

I purchased my .com domain only yesterday from wordpress.com (example.com) which I paid around $25 for. I soon realised that wordpress.com is in fact limited to certain themes and I would therefore like to be able to customise my site and have more options available etc.

Will I have to pay for another site to host for me in order to migrate to www.ads-software.com or can I redirect my wordpress.com registered domain to worpress.org without having to further pay anymore costs.

I am new to this and, as you can gather, am not exactly entirely sure either as to what I am on about. Any help whatsoever would be highly appreciated ??

Many Thanks In Advance