Skin accepts HTML code, simply add a < a href="www.mytargetsite.com" target="_blank">my Link< /a>  (omit spaces  between < and following character).

Hey Cory

Here is an example I just did a couple of minutes ago for a content pane in the ascx file footer to have custom footer links, it is not the most elegant but does the job.  The reason for using a contentpane and not hard coding links is it is easy to link to pages on your existing site (given the urls that DotNetNuke creates) and allows you to change the text or link without the need to touch the code after deployment.

NOTES:
- The key area is in bold
- This example has right aligned footer links you could also do left or center similar
- The float right, floats the contentpane "SiteLink" to the right of the other footer links (works in ie7, ie8 and moz 3.5)  thats all ive tested
- you could remove the margin-right its simply for spacing on the far right of the links
- I usually create a container called none that removes all cotainer tools but the action menu and assign it to this pane to provide better display in admin mode
- You then put a HTML module in this content pane but be careful as depending on what content you put in this html module you may have to create a style that controls its margins/padding to ensure it stays inline i.e. FooterLinks p { margin: 0px; padding: 0px;} for a paragraph

<div id="Footer">
    <div style="float:right; margin-right:14px;" class="FooterLinks" runat="server" id="SiteLink"></div><dnn:COPYRIGHT runat="server" id="dnnCOPYRIGHT" CssClass="FooterLinks" />
    &nbsp;&nbsp;|&nbsp;&nbsp;<dnn:TERMS runat="server" id="dnnTERMS" Text="Disclaimer"
        CssClass="FooterLinks" />
    &nbsp;&nbsp;|&nbsp;&nbsp;
</div>

Hope this helps
Ed