I've never had any luck on a dial up with any of those sorts of programs or services. They are basically a waste of money to be honest. They were all the rage several years back. The newer ones are just caching services that provide no real benefit except to separate people from their money. What so called speeding up they do certainly isn't worth the extra expense.
Onspeed is one such caching service and there are many others as well. If your connection speed is between about 44 Kbps and 52 Kbps thats about as good as it gets with dial-up anywhere in the world.
I am trying "OnSpeed" a dial-up enhancer that costs about $45 a year and speeds up dial up and email. I reckon it works.But as they say in the literature, doesn't affect all files i.e exe or music, but good with graphics and text.I reckon it's quicker loading Ebay pages too.Stands to reason, all the graphics.Anyone else tried it?

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