Hiya fug!
I just installed the URL Rewrite IIS extension and defined the rewrite rules. Then I did a search through all of the Snitz ASP pages for ".asp" and updated its link generation code points accordingly. Here's the rewrite config section (from web.config) for the site for reference.
<rewrite>
<rules>
<clear />
<rule name="CanonicalHostNameRule1">
<match url="(.*)" />
<conditions>
<add input="{HTTP_HOST}" pattern="^www\.strokesplus\.com$" negate="true" />
</conditions>
<action type="Redirect" url="http://www.strokesplus.com/{R:1}" />
</rule>
<rule name="LowerCaseRule1" stopProcessing="true">
<match url="[A-Z]" ignoreCase="false" />
<action type="Redirect" url="{ToLower:{URL}}" />
</rule>
<rule name="RemoveTrailingSlashRule1" enabled="false" stopProcessing="true">
<match url="(.*)/$" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
</conditions>
<action type="Redirect" url="{R:1}" />
</rule>
<rule name="Downloads" stopProcessing="true">
<match url="^downloads/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="/forum/forum.asp?FORUM_ID=6" />
</rule>
<rule name="Scripts">
<match url="^scripts/(\d*)$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="/script_detail.asp?scrid={R:1}" />
</rule>
<rule name="Script Types">
<match url="^scripts/type/(\d*)$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="/script_type.asp?sctid={R:1}" />
</rule>
<rule name="Windows 8 Notes Post" stopProcessing="true">
<match url="^windows8/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Redirect" url="http://www.strokesplus.com/forum/topic.asp?TOPIC_ID=565" />
</rule>
<rule name="Custom Config Path" stopProcessing="true">
<match url="^customconfig/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Redirect" url="/forum/topic.asp?TOPIC_ID=347" />
</rule>
<rule name="Topic: Old Pattern" enabled="true" stopProcessing="true">
<match url="^forum/topic\.asp$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false">
<add input="{QUERY_STRING}" pattern="^TOPIC_ID=(\d+)+$" />
</conditions>
<action type="Redirect" url="/forum/topic/{C:1}/" appendQueryString="false" redirectType="Permanent" />
</rule>
<rule name="Forum: Topic View" stopProcessing="true">
<match url="^forum/topic/(\d+)(/([0-9a-zA-Z\-]+))?/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="forum/topic.asp?TOPIC_ID={R:1}" />
</rule>
<rule name="Forum: Main" stopProcessing="true">
<match url="^forum/(\d+)(/([0-9a-zA-Z\-]+))?/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="forum/forum.asp?FORUM_ID={R:1}" />
</rule>
<rule name="Forum: Category" stopProcessing="true">
<match url="^forum/cat/(\d+)(/([0-9a-zA-Z\-]+))?/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="forum/default.asp?CAT_ID={R:1}" />
</rule>
<rule name="Forum: Old Pattern" stopProcessing="true">
<match url="^forum/forum\.asp$" />
<conditions>
<add input="{QUERY_STRING}" pattern="^FORUM_ID=(\d+)+$" />
</conditions>
<action type="Redirect" url="/forum/{C:1}/" appendQueryString="false" />
</rule>
<rule name="Category: Old Pattern" stopProcessing="true">
<match url="^forum/default\.asp$" />
<conditions>
<add input="{QUERY_STRING}" pattern="^CAT_ID=(\d+)+$" />
</conditions>
<action type="Redirect" url="forum/cat/{C:1}" appendQueryString="false" />
</rule>
</rules>
<outboundRules>
<rule name="Outbound: Remove Trailing Question Mark" enabled="true">
<match filterByTags="A" pattern="(.*)\?$" />
<action type="Rewrite" value="{R:1}" />
</rule>
<rule name="Outbound: Remove Trailing Slash">
<match filterByTags="A" pattern="(/forum/topic/(.*))/$" />
<action type="Rewrite" value="{R:1}" />
</rule>
</outboundRules>
</rewrite>