In order to hinder spammers, most ISP will not allow you to forward email through their server.   Thus, if have have set your outgoing email server to that of your own ISP and you are logged on to a different ISP, that ISP will not allow you to send email.  It worked at your nephew's because you set the outgoing mail server to his ISP which is the one you were logged on to.   The only real solution to this problem is to use web mail (i.e. a web browser based email account, but this will only work if your ISP provides that service. 

Stev

Get yourself a yahoo email account and you can access it anywhere, and if you should ever have to move your email address will never have to be changed.

dallascowboysworldchamps
__________________________

Inspiron E1505
Intel Core 2 Duo processor T7200 (4MB/2.00GHz/667MHz)
15.4 Inch UltraSharp TrueLife Wide-screen WSXGA+
2GB, DDR2, 667MHz Crucial Memory
256MB ATI MOBILITY RADEON X1400
120GB 5400RPM SATA Hard Drive
8X DVD+/-RW Philips Drive
Dell Wireless 1500 802.11N Mini Card
Dell Wireless 355 Bluetooth Module (2.0 + EDR)
Windows XP Pro SP2
Bios A17
pur. Sept. 7 2006
WRT350N Linksys Router v1 firmware v1.03.2
FreeAgent 320gb Seagate Ext. HD
Kaspersky Internet Security v 7.0.0.125