Hi there,
truely Toefl tries to check out the general grasping of the language so take it in that stream only...i guess Anuj has rightly pointed out that aspect...with kaplan and powerprep Cd practice tests, you should be able to get somewhere 250-273 outta 300 marks, provided that you already posses the grammatical command...Though to cross this range you need to go an extra mile...keep it in mind that toefl tests your ability to do well in regard with "American english"...and this is really quite different from british english that we are used to practice... so try to schedule your preparation with all this in mind and also while you are going through readying your armor...
In sum, you don't have to practice only for toefl...I would reccomend that you better go for comprehensive preparation of Gre/Gmat whichever you are gonna go for...It would make you prepared for Toefl by default...and to get to know the pattern of this, you should use the powerprep tests in the end...
If it would be of help, I didn't study just for Toefl though, I used to read/listen to CNN and NYtimes... I studied the baron for my gre prep( its really not required for toefl !!)... you can also watch american Sitcoms like Friends, Latenight show with Jayleno or whatever interests you...cause i guess only part you can lose marks is the listening section... so all you need to do is to have a good command in general and then brush up that knowledge with help of kaplan/Powerprep tests and you can also download specific Toefl tests (all sections) with help of any P2P software like Kazza or limewire...
Hope it would be of help...Best of luck !!
Jai
