Hey, You can simply edit the Category Page from the template editor and add these to the right place you need and stylize using Divs!! Well, If you do this, Your adsense will be at Risk because, this is what People Call Keyword Spamming!! ~ExP~
Thanks... why Keyword Spamming...i dont post ads there... i only writes about category which is belonged././
LOL!! You Have Adsense Running in Your Site RIght? So You arent supposed to Write Up Similar Keywords, in a way to make the Ads relevant or to get some high paid ads shown on your site!! ~Exp~
You might very well get away with it with no problems, but extremephp is right, Google would frown upon it. Best of luck.