Help! Can't download virus definitions - dialup too slow

I replaced my Norton AntiVirus 2006 with the 2010 version.  But I am on dialup and  discovered I could not download the updates needed since the connection is so slow.

 

So I tried to use system restore to go back to a point before I switched to the 2010.  But system restore wouldn't work (I disabled the Norton before I used system restore)  So I uninstalled the 2010 - tried system restore again and it still wouldn't do it.

 

So I reinstalled the 2006 version, thinking that it would be easier to download the updates because  I could uncheck  some of the boxes and do it a few at a time.

 

I downloaded everything with no problem but when  I got to the Virus Definitions, I discovered that the download is so large - about 95 MG -  it's impossible to load them because I get disconnected and have to start all over from the beginning.

 

So now I'm stuck and have no virus protection.  Can someone offer me a suggestion on how to either download the virus defiinitions or somehow use system restore to go back to a point before I started this whole mess?

 

Thanks