altepg image or not

Hi,
I have 2 tivos, one with cachecard which uses the nic for downloads, one without cachecard which uses the modem for downloads, these obviously use altepg but they don't have an actual 'altepg' image. Is it worthwhile installing an altepg image on these ? what are the advantages ?
Also I have found the dialup tivo fails a lot lately, it takes about 40 mins per call, is this normal ?
Thanks
Paul
I have 2 tivos, one with cachecard which uses the nic for downloads, one without cachecard which uses the modem for downloads, these obviously use altepg but they don't have an actual 'altepg' image. Is it worthwhile installing an altepg image on these ? what are the advantages ?
Also I have found the dialup tivo fails a lot lately, it takes about 40 mins per call, is this normal ?
Thanks
Paul