alt131 - 8:41 am on Aug 23, 2012 (gmt 0)
Thanks for the clarification. As I understand it, you are not asking for help to get the text to show in visual user agents (like browsers) you are asking whether going live with the text not visible will be deemed spammy. As I said above, that will depend on what the text says. Massive keyword stuffing is spam and depending on the quantity, may be penalised.
My second thought is that if you intended the text to be visible for visual users, and it isn't, it is just wasted bandwidth: Removing it solves the whole issue.
My final thought is that if you originally wanted the text to be visible for visual users, then what about trying to get the code to perform as desired? Text is so much better as text than as an image (unless there is some other reason an image is necessary) and it should not be difficult. However, as Lucy says, we need some code because there are a number of ways to do this.
If you want to look yourself, start by checking whether the "slider" script is loading the images into divs, then using either display/visibility or z-index to switch them around. The div you inserted to hold your text may be inheriting the styles so it remains hidden.