Got this from my ISP.
Didn't have either worm, which is nice to know.
If you suspect you have one, you can fix it here.
Dear Gulftel Internet customer:
W32.Blaster.Worm and W32.Welchia.Worm are worms that exploit vulnerabilities (described in Microsoft Security Bulletin MS03-026 and Microsoft Security Bulletin MS03-007) in Microsoft Windows 2000 and Microsoft Windows XP.
We know that a great number of our customer's PCs have been infected by these worms. To help you fix you systems we have placed programs on our web sites that will take care of the problem on your systems.
Remember these fixes are for Windows XP, Windows 2000, and Windows NT.
Symantec utilities that will scan for and remove the worms are available by visiting the following links:
W32.Blaster.Worm:
http://www.gulftel.net/tools/fixblast.exe W32.Welchia.Worm:
http://www.gulftel.net/tools/fixwelch.exe