Thank you so much Paul!! I got it to work. I had to play with it a little.. but here is what it ended up being:
Code:
{if $discount gt 0}
<font class="MarketPrice">{$lng.lbl_market_price}: <s>
{include file="currency.tpl" value=$products[product].list_price}
</s></font><br />
{/if}
{else}
{if $discount eq 0}
<font class="MarketPrice"><br /></font>
{/if}