Purloined this from a cocktail site I know...

Strawberry Margarita
- 2 oz Tequila
- 1 oz Triple Sec
- 1 oz Lime Juice
- 1 oz Strawberry Liqueur
- Salt
- Lime Wedge
- Glassware: Margarita Glass

Rub the rim of a margarita glass with lime wedge and dip into salt. Shake tequila, triple sec, lime juice and strawberry liqueur in a shaker with ice cubes. Strain into a margarita glass.

You could also make them frozen...I tend to make daquiris rather than margaritas....

Bacardi
Tin of strawberries
Ice cubes
strawberry liquer if available.

Blend together in a smoothie maker (that can crush ice).