Gallery needs upgrades

I installed the gallery module and its great. i got everything working just like i wanted to. the website is doing wonderful. i increased our traffic and sales through the website by over 1,000 percent in about 2 1/2 months. I'm now working on getting us higher rankings on search engines without paying more for our google ADword or yahoo ADs. i installed xmlsitemap and its ok. but when i search for images on google we suck. i noticed that using the gallery module the title becomes the images alt as well. which is what most search engines index. i don't think that is very efficient or suitable. i was wondering if there was a different module where i can manually put in the text for the alt so that we can be indexed better. i appreciate all the help and if i wind up creating it myself i'll be sure to post it on the web so that other can use it so that others can use it as well.