zip-tool difficulties....

Hi,
Could you please recommend how I can get hold of a free-of-charge method to compress the rest of an 'apartment tour' photo-gallery? So far, I have only managed to get through with the 1 photo and their are quite alot waiting to be added....
I don't think I have anything like Winzip which would solve this.
Thanks,
Stephen
Could you please recommend how I can get hold of a free-of-charge method to compress the rest of an 'apartment tour' photo-gallery? So far, I have only managed to get through with the 1 photo and their are quite alot waiting to be added....
I don't think I have anything like Winzip which would solve this.
Thanks,
Stephen