SBC Offers Wi-Fi Service to DSL Users for \$1.99/mo  WASHINGTON (Reuters) - SBC Communications Inc. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=SBC.N qtype=sym infotype=info qcat=news"&gt;SBC.N&lt;/A&gt; said  on Monday it would offer access to its network of 3,900 public  Wi-Fi Internet access points to its high-speed Internet  subscribers for \$1.99 per month.