Medianet is a fine browser. But a full HTML browser it is not. If you want a better experience then try Opera-mini or BOLT browser. In full HTML view they can render the screen on your Solstice just like your PC. And if installed properly can download ringtones or pics and attachments in web mail. They will even be able to send attachments through your webmail.
Install the jar and jad using the TKFE install method described here.
http://www.samsung-solstice.com/index.php?topic=194.0If you don't have a cable you can still install these browsers and you can then goatbreak them at a later date. Upload just the jad to wapHQ
http://www.waphq.net/index.php and then use the jumpcode to download and install to your phone.
EDIT: 3/22/10 Opera Mini version 4.2 has been removed and replaced with the new opera mini 5.0. Also Bolt 1.7 has been added.
EDIT 4/22 You now have a choice of Bolt Browsers. 1.7 or the beta. Can only have 1 or the other. Jad and jar are included in zip file.